Publications
2022. L Lawrence, C Spandler, H Hilbert-Wolf, C Mtelela, NJ Stevens, PM O’Connor, EM Roberts. Radiogenic isotope record of magma genesis and lithospheric geodynamics of the Rukwa Rift Basin, Tanzania, from mid Mesozoic to present. Chemical Geology. doi: 10.1016/j.chemgeo.2022.121040.
2022. T Orr, CM Wurster, EM Roberts, C Mtelela, NJ Stevens, PM O’Connor. Paleoatmospheric CO2 oscillations through a cool middle/Late Cretaceous recorded from pedogenic carbonates in Africa. Cretaceous Research. doi: 10.1016/j.chemgeo.2022.121040.
2022. E Beverly, L Hommema, K Coates, G Duncan, B Gable, T Gutman, M Love, C Love, M Pershing, NJ Stevens. Tranquil Virtual Reality Experience to Reduce Subjective Stress among COVID-19 Frontline Healthcare Workers. PLOS-ONE. doi: 10.1371/journal.pone.0262703
2021. T Orr, EM Roberts, CM Wurster, C Mtelela, NJ Stevens, PM O'Connor. Paleoclimate and paleoenvironment reconstruction of paleosols spanning the Lower to Upper Cretaceous from the Rukwa Rift Basin, Tanzania. Palaeogeography, Palaeoclimatology, Palaeoecology. doi: 10.1016/j.palaeo.2021.110539
2021. NJ Stevens, PM OConnor, C Mtelela, EM Roberts. Macroscelideans (Myohyracinae and Rhynchocyoninae) from the late Oligocene Nsungwe formation of the Rukwa Rift Basin, southwestern Tanzania. Historical Biology. doi: 10.1080/08912963.2021.1938565
2021. Evolution and paleoenvironment of early modern vertebrates during the Paleogene. Geobios. T Smith, T De Putter, S Louwye, J Yans, M Borths, NJ Stevens. doi: 10.1016/j.geobios.2021.04.001
2020. K Claeson, S Ngasala, EM Roberts, MD Gottfried, NJ Stevens. A new Protopterus assemblage of Cenozoic lungfishes (Dipnoi: Lepidosirenidae) from the late Oligocene Nsungwe Formation of Tanzania. Geobios. doi: 10.1016/j.geobios.2020.09.004
2020. J McCartney, S Bouchard, JA Reinhardt, E Roberts, C Mtelela, NJ Stevens. The oldest lamprophiid (Serpentes, Caenophidia) fossil from the late Oligocene Rukwa Rift Basin, Tanzania and the origins of African snake diversity. Geobios. 10.1016/j.geobios.2020.07.005
2020. KL Whitman, JH Ratsimbazafy, NJ Stevens. Food security, nutrition, and sustainable rice agriculture in a biodiversity hotspot, Maromizaha, Madagascar. Madagascar Conservation and Development.
2020. A Weber, G Kalema-Zikusoka, NJ Stevens. Lack of rule adherence during gorilla tourism encounters in Bwindi Impenetrable Forest, Uganda. Frontiers in Public Health. doi: 10.3389/fpubh.2020.00001
2020. E Wyza, L Dollar, LP Rahajanirina, DV Popescu, NJ Stevens. Spatial dynamics and activity patterns of the fosa Cryptoprocta ferox in Ankarafantsika National Park, Madagascar: carnivores navigating a human-influenced landscape. Oryx doi:10.1017/S0030605319000498
2019. DC Blackburn, DJ Paluh, I Krone, EM Roberts, EL Stanley, NJ Stevens. The earliest fossil evidence of the African Clawed Frog (genus Xenopus) from sub-Saharan Africa. Journal of Herpetology.
2019. MR Borths, NJ Stevens. Simbakubwa kutokaafrika gen. et sp. nov. (Hyainailourinae, Hyaenodonta, “Creodonta”, Mammalia) from the earliest Miocene of Kenya and the evolution of gigantic hyaenodonts. Journal of Vertebrate Paleontology.
2019. PM O’Connor, D Krause, NJ Stevens, J Groenke, R MacPhee, D Kalthoff. The first mammal from the Turonian - Campanian (Late Cretaceous) of mainland Africa. Acta Paleontologica Polonica.
2018. GF Gunnell, DM Boyer, S Heritage, FK Manthi, ER Miller, HM Sallam, NB Simmons, NJ Stevens, ER Seiffert. Fossil lemurs from Egypt and Kenya reveal an African origin for Madagascar’s aye-aye. Nature Communications.
2018. E Wyza, L Dollar, NJ Stevens. First evidence of male spatial associations and roadkill mortality in Madagascar’s largest carnivore species (Cryptoprocta ferox) in Ankarafantsika National Park. Small Carnivore Conservation.
2018. F Solé, C Noiret, D Desmares, S Adnet, L Taverne, T De Putter, F Mees, J Yans, T Steeman, S Louwye, A Folie, N Stevens, G Gunnell, D Baudet, N Kitambala Yaya, T Smith. Reassessment of historical sections from the Paleogene marine margin of the Congo Basin reveals an almost complete absence of Danian deposits. Journal of African Earth Sciences.
2018. YR Epa, AL Stigall, HD O’Brien, EM Roberts, NJ Stevens. Morphological diversification of ampullariid gastropods (Nsungwe Formation, Late Oligocene, Rukwa Rift Basin) is coincident with onset of East African Rifting. Papers in Palaeontology.
2018. J Muller, EM Roberts, ER Naylor, NJ Stevens. A fossil gekkotan (Squamata) from the Late Oligocene Nsungwe Formation, Rukwa Rift Basin, Tanzania. Journal of Herpetology.
2018. S Widlansky, W Clyde, PM O’Connor, EM Roberts, NJ Stevens. Paleomagnetism of the Cretaceous Galula Formation and implications for vertebrate paleontology. Journal of African Earth Sciences.
2017. M Borths, NJ Stevens. Taxonomic affinities of the enigmatic Prionogale. Historical Biology. DOI: 10.1080/08912963.2017.1393075.
2017. M Borths and NJ Stevens. Deciduous dentition of Hyainailouroidea (Hyaenodonta, Placentalia, Mammalia). Paleoelectronica. DOI: 10.26879/776palaeo-electronica.org/content/2017/ 2056-deciduou-hyaenodont-teeth.
2017. M Borths and NJ Stevens. The first African hyaenodont from the beginning of the Paleogene-Neogene carnivore transition (late Oligocene, Nsungwe Formation, Rukwa Rift Basin, Tanzania). PLOS-ONE.
2017. E Gorscak, PM O’Connor, EM Roberts, NJ Stevens. The second titanosaurian (Dinosauria: Sauropoda) from the middle Cretaceous Galula Formation, southwestern Tanzania with remarks on African titanosaurian diversity. Journal of Vertebrate Paleontology.
2017. C Mtelela, EM Roberts, H Hilbert-Wolf, B Downie, M Hendrix, NJ Stevens. Sedimentology and paleoenvironments of a fossiliferous late Neogene-Quaternary sedimentary succession in the Rukwa Rift Basin, Tanzania. Journal of African Earth Sciences.
2017. H Hilbert-Wolf, EM Roberts, NJ Stevens. Application of U-Pb detrital zircon geochronology to drill cuttings for age control in hydrocarbon exploration wells: a case study from the Rukwa Rift Basin, Tanzania. American Association of Petroleum Geologists.
2016. EM Roberts, NJ Stevens et al. Oldest fossil evidence of farming insects reveals origin of agriculture. PLOS-ONE.
2016. S Cote, K McNulty, NJ Stevens and IO Nengo. A detailed assessment of the maxillary morphology of Limnopithecus evansi with implications for the taxonomy of the genus. Journal of Human Evolution
2016. W Stevens, K Claeson, NJ Stevens. Alestid fishes from the late Oligocene Nsungwe Formation, Rukwa Rift Basin, Tanzania. Journal of Vertebrate Paleontology
2015. D Blackburn, EM Roberts, NJ Stevens. The earliest record of the endemic African frog family Ptychadenidae from the Oligocene Nsungwe Formation of Tanzania. Journal of Vertebrate Paleontology
2014. E Gorscak, PM O’Connor, NJ Stevens, EM Roberts. A basal titanosaurian sauropod from the middle Cretaceous Galula Formation, Rukwa Rift Basin, southwestern Tanzania. Journal of Vertebrate Paleontology.
2014. JA Hancock, NJ Stevens, AR Biknevicius. Elegant-crested tinamou Eudromia elegans do not synchronize head and leg movements during head-bobbing. Ibis.
2014. J McCartney, NJ Stevens, PM O'Connor. The Earliest Colubroid-Dominated Snake Fauna from Africa: Perspectives from the Late Oligocene Nsungwe Formation of Southwestern Tanzania. PLOS ONE.
2013. NJ Stevens et al. Palaeontological evidence for an Oligocene divergence between Old World monkeys and apes. Nature. 497: 611-614.
2013. NJ Stevens, Mohammed Al-Wosabi, Anne Schulp, Robert Hill, Mustafa As-Saruri, Fuad Al- Nimey, Lea Ann Jolley, Yvonne Schulp-Stuip, and Patrick O’Connor. A middle Eocene mesoeucrocodylian (Crocodyliformes) from the middle Eocene Kaninah Formation, Republic of Yemen. Geologos. 19(2): 175-183. DOI: 10.2478/logos-2013-0010.
2013. NJ Stevens, CP Heesy. Head posture and visual orientation in Loris tardigradus during locomotion on oblique supports. In: J. Masters (ed) Leaping Ahead: Advances in Prosimian Biology.
2013. JH Ratsimbazafy, NJ Stevens et al. Conservation of Lemurs in Madagascar. In: J. Masters (ed) Leaping Ahead: Advances in Prosimian Biology.
2012. J Phan and NJ Stevens. A comparative study of activity budgets in captive and semi-free ranging Hatinh and Delacour’s langurs (Trachypithecus hatinhensis and T. delacouri). Vietnamese Journal of Primatology. 2(1): 55-66.
2012. EM Roberts, NJ Stevens, PM O’Connor, PHGM Dirks, MD Gottfried, WC Clyde, RA Armstrong, AIS Kemp, S Hemming. Initiation of the western branch of the East African Rift coeval with the eastern branch. Nature Geosciences. 5:289-294.
2012. ER Seiffert, S Nasir, A Al-Harthy, JR Groenke, BP Kraatz, NJ Stevens and AR Al-Sayigh. Diversity in the later Paleogene proboscidean radiation: a small barytheriid from the Oligocene of Dhofar Governorate, Sultanate of Oman. Naturwissenschaften.
2011. NJ Stevens, JT Eastman, SO Odunze, LN Cooper, GC Obi. Paleocene ichthyofauna and paleoenvironmental setting, Imo Formation, southeastern Nigeria. Neues Jahrbuch fur Geologie und Palaontologie.
2011. NJ Stevens, JH Ratsimbazafy, F Ralainasolo. Linking field and laboratory approaches for studying primate responses to support orientation. In: E Vereecke and K D’Aout (eds), Primate Locomotion: Linking Laboratory and Field Research. Springer, Topics in Primatology.
2010. PM O’Connor, JW Sertich, NJ Stevens, et al. The evolution of mammal-like crocodyliforms in the Cretaceous of Gondwana.Nature. 466: 748-751.
2010. EM Roberts, PM O’Connor, NJ Stevens, MD Gottfried, ZA Jinnah, S Ngasala, AM Choh and RA Armstrong. Sedimentology and depositional environments of the Red Sandstone Group, Rukwa Rift Basin, Tanzania: New insight into Cretaceous and Paleogene terrestrial ecosystems and tectonics in sub-Equatorial Africa. Journal of African Earth Sciences. 57:179-212.
2009. NJ Stevens, EM Roberts, PM O’Connor, MD Gottfried. Rukwalorax jinokitana (n. gen., n. sp.) (Mammalia: Hyracoidea) from the late Oligocene Rukwa Rift Basin, Tanzania. Journal of Vertebrate Paleontology. 29(3): 972-975.
2009. MD Gottfried, NJ Stevens, PM O’Connor, EM Roberts, R Chami. A new Cretaceous lungfish (Dipnoi, Ceratodontidae) from the Rukwa Rift Basin, Tanzania. African Natural History. 5:31-36.
2009. PA Holroyd and NJ Stevens. Differentiation of Phiomys andrewsi from Lavocatomys aequatorialis (n. gen., n. sp.) (Rodentia:Thryonomyoidea) in the Oligo-Miocene interval on continental Africa. Journal of Vertebrate Paleontology. 29(4):1331-1334.
2009. S Johnson, J Ratsimbazafy, NJ Stevens, H Andriamaharoa, S Martin, F Ralainasolo. Gray-headed lemur Eulemur cinereiceps (Milne-Edwards and Grandidier, 1880). In: R. A. Mittermeier et al., Primates in Peril: The World’s 25 Most Endangered Primates 2008–2010, pp.15-17. IUCN/SSC Primate Specialist Group, International Primatological Society (IPS), and Conservation International (CI), Arlington, VA.
2009. NJ Stevens, PA Holroyd, EM Roberts, PM O’Connor, MD Gottfried. Kahawamys mbeyaensis (n. gen., n. sp.) (Rodentia: Thryonomyoidea) from the late Oligocene Rukwa Rift Basin, Tanzania. Journal of Vertebrate Paleontology. 29(2): 631-634.
2008. F Ralainasolo, JH Ratsimbazafy, and NJ Stevens. Behavioural study and diet of Eulemur cinereiceps in Manombo forest, southeastern Madagascar. Madagascar Conservation and Development. 3: 54-59.
2008. KA Wright, NJ Stevens, HH Covert and T Nadler. Hanging around: a comparison of suspensory postures in langurs and gibbons at the Endangered Primate Research Center, Cuc Phuong National Park, Vietnam. International Journal of Primatology.
2008. NJ Stevens and K. Carlson. Bridging the gaps between experimental and naturalistic approaches to the study of primate behavior. International Journal of Primatology.
2008. NJ Stevens, KA Wright, HH Covert and T Nadler. Tail postures of four quadrupedal leaf monkeys (Pygathrix nemaeus, P. cinerea, Trachypithecus delacouri and T. hatinhensis) at the Endangered Primate Rescue Center, Cuc Phuong National Park, Vietnam. Vietnam Journal of Primatology. 2: 13-24.
2008. AS Schulp, M Al-Wosabi, NJ Stevens. First dinosaur tracks from the Arabian Peninsula. Public Library of Science – ONE
2008. NJ Stevens. The effects of branch diameter on primate gait sequence pattern. American Journal of Primatology. 70(4): 356-362.
2008. NJ Stevens, MD Gottfried, EM Roberts, S Ngasala, S Kapilima, PM O’Connor. Paleontological exploration of Africa: A view from the Rukwa Rift Basin of Tanzania. In: Elwyn Simons, A Search for Origins, Developments in Primatology: Progress and Prospects. pp 159-180.
2008. AR Al-Sayigh, S Nasir, AS Schulp, NJ Stevens. The first described Arsinoitherium from the Eocene Aydim Formation of Oman: Biogeographic implications. Paleoworld. 17:41-46.
2007. RM Feldmann, PM O’Connor, NJ Stevens, MD Gottfried, EM Roberts, S Ngasala, EL Rasmusson, S Kapilima. A new freshwater crab (Decapod: Potamonautidae) from the Paleogene of Tanzania, Africa. Neues Jahrbuch fur Geologie und Palaontologie. Vol. 8:71-78.
2007. J Young, BA Patel, NJ Stevens. Body mass distribution and gait sequence pattern in fat-tailed dwarf lemurs (Cheirogaleus medius) and patas monkeys (Erythrocebus patas). Journal of Human Evolution. 53(1):26-40.
2007. JA Hancock, NJ Stevens, AR Biknevicius. The whole-body mechanics and kinematics of terrestrial locomotion in the elegant-crested tinamou (Eudromia elegans). Ibis. 149(3): 605-614.
2007. KAI Nekaris, NJ Stevens. Not all lorises are slow: rapid arboreal quadrupedalism in the newly recognized red slender loris (Loris tardigradus tardigradus) of Sri Lanka. American Journal of Primatology. 69(1):112-120.
2006. NJ Stevens. Stability, limb coordination and substrate type: the ecorelevance of gait sequence pattern in primates. Journal of Experimental Zoology. 305A(11):953-963.
2006. NJ Stevens, CP Heesy. Malagasy primate origins: Fossils, phylogenies and biogeographic reconstructions. Folia Primatologica. 77(6):419-431.
2006. NJ Stevens, PM O’Connor. Abiotic and Biotic Factors as Predictors of Primate Species Richness in Madagascar. In: Primate Biogeography. eds: JG Fleagle and S Lehman. pp 269-300.
2006. CP Heesy, NJ Stevens, K Samonds. Biogeographic origins of primate higher taxa. In: Primate Biogeography. eds: JG Fleagle and S Lehman. pp 419-438.
2006. PM O’Connor, MD Gottfried, NJ Stevens, EM Roberts, S Kapilima. A Cretaceous fauna from Southwestern Tanzania. Journal of African Earth Sciences. 44:277-288.
2006. NJ Stevens. Animal Locomotion. American Journal of Physical Anthropology. 129:639-640.
2006. NJ Stevens, PM O’Connor, EM Roberts, MD Gottfried, S Ngasala, S Kapilima. Metaphiomys from the Paleogene of Southwestern Tanzania. Journal of Paleontology. 80(2):407-410.
2006. NJ Stevens, DO Schmitt, T Cole, L-K Chan. Technical note: Out-of-plane angular correction based on a trigonometric function for use in kinematic studies. American Journal of Physical Anthropology. 129:399-402.
2005. NJ Stevens, PM O’Connor, EM Roberts, MD Gottfried, S Ngasala. An anthropoid primate humerus from the Paleogene of sub-Saharan Africa. Journal of Vertebrate Paleontology. 25(4): 986-989.
2005. PM O'Connor, MD Gottfried, EM Roberts, S Ngasala, NJ Stevens, S Kapilima, R Chami. New Cretaceous vertebrate fossil discoveries from the Red Sandstone Group, Rukwa Rift Basin, southwestern Tanzania. East African Rift System (EAR05): Geodynamics, environment, resources & sustainable development Vol. 1:82-84.
2005. EM Roberts, S Ngasala, S Kapilima, PM O'Connor, MD Gottfried, NJ Stevens, R Chami. Stratigraphic and sedimentological analysis of the Red Sandstone Group in the Songwe Valley, Mbeya District. East African Rift System (EAR05): Geodynamics, environment, resources & sustainable development 1:87-90.
2004. EM Roberts, PM O’Connor, MD Gottfried, NJ Stevens, S Kapilima, S Ngasala. Revised stratigraphy and age assessment for the Red Sandstone Group in the Rukwa Rift Basin, Tanzania. Cretaceous Research.
2003. NJ Stevens. The influence of substrate size, orientation and compliance upon prosimian arboreal quadrupedalism. Ph.D. dissertation, State University of New York at Stony Brook. 534pp.
2001. Grine, FE, NJ Stevens, WL Jungers. Evaluation of dental radiograph accuracy in the measurement of enamel thickness. Archives of Oral Biology. 46:1117-1125.
2000. Robbins, LH, ML Murphy, GA Brook, AH Ivester, AC Campbell, RG Klein, AS Brooks, J Kokis, KA Haberyan, R Milo, KM Stewart, DG Matthiesen, AJ Winkler, NJ Stevens. Archaeology, Paleoenvironment and Chronology of the Tsodilo Hills White Paintings Rock Shelter: Northwest Kalahari Desert, Botswana. Journal of Archaeological Science. 27(11): 1085-1113.
1996. Robbins, LH, ML Murphy, NJ Stevens, GA Brook, AH Ivester, KA Winkler, Haberyan, RG Klein, R Milo, KM Stewart, DG Matthiesen, AJ Winkler. Paleoenvironment and Archaeology of Drotsky’s Cave: Western Kalahari Desert, Botswana. Journal of Archaeological Science. 23(1): 7-22.
1991. Stewart, K, NJ Stevens, LH Robbins. Fish and reptiles from the Tsodilo Hills White Paintings rock shelter, Botswana. Nyame Akuma, (Bulletin of the society of Africanist Archaeologists). 35: 11-17.
Research Presentations / Abstracts
2017. NJ Stevens, ER Seiffert, PM O’Connor, EM Roberts. Faunal diversity in the late Oligocene Nsungwe Formation fauna, Rukwa Rift Basin, southwestern Tanzania. Journal of Vertebrate Paleontology.
2017. M Borths, NJ Stevens. Gigantic hyainailourine (Hyaenodonta, “Creodonta”) from the early Miocene of Kenya. Journal of Vertebrate Paleontology.
2017. NJ Stevens, ER Seiffert, PM O’Connor, EM Roberts. Exploring an undersampled interval in primate evolutionary history: Insights from the Late Oligocene Nsungwe Formation of Tanzania. American Journal of Physical Anthropology.
2017. R Jansma, K McNulty, IO Nengo, NJ Stevens. New Small Catarrhine Fossils from Songhor and Lower Kapurtay and their Implications for Interpreting Early Miocene Primate Communities. American Journal of Physical Anthropology.
2016. H. Hilbert-Wolf, EM Roberts, X Mtelela, PM O’Connor, NJ Stevens. U/Pb geochronology and detrital thermochronology reveal younger sedimentation in the Rukwa Rift Basin. Geology.
2016. NJ Stevens, ER Seiffert, PM O’Connor, EM Roberts. A diverse new fossil locality in the late Oligocene Nsungwe Formation, southwestern Tanzania. Journal of Vertebrate Paleontology.
2016. M Borths, E Roberts, NJ Stevens. The first hyaenodont from the late Oligocene Nsungwe Formation, Rukwa Rift Basin, Tanzania: Ecological diversity of Afro-Arabian mammalian carnivores near the Paleogene/Neogene boundary. Journal of Vertebrate Paleontology.
2016. J McCartney, E Roberts, NJ Stevens. A new ophiofauna from the late Oligocene Nsungwe Formation of Tanzania. Journal of Vertebrate Paleontology.
2016. S Widlansky, W Clyde, P O’Connor, E Roberts, NJ Stevens. Cretaceous magnetostratigraphy of southwestern Tanzania: Implications for vertebrate biogeography. Journal of Vertebrate Paleontology.
2015. NJ Stevens, ER Seiffert, PM O’Connor, EM Roberts. Faunal diversity in the late Oligocene Nsungwe Formation, Rukwa Rift Basin, southwestern Tanzania. American Journal of Physical Anthropology.
2015. K McNulty, IO Nengo, DL Fox, NJ Stevens, FK Manthi, E Mbua, D Peppe. New partial cranium from an early Miocene locality at Lower Kapurtay. American Journal of Physical Anthropology.
2015. S Widlansky, W Clyde, P O’Connor, E Roberts, NJ Stevens. Magnetostratigraphy of the Cretaceous Galula Formation from the Rukwa Rift Basin, Tanzania. Journal of Vertebrate Paleontology.
2015. H Hilbert-Wolf, EM Roberts, T Kane, P OConnor, NJ Stevens. Synthesizing taphonomic, sedimentologic, and geochronologic analyses of the Oligocene Nsungwe Formation (Rukwa Rift Basin, Tanzania) to unravel evolutionary patterns and ecological change amid an evolving landscape. Journal of Vertebrate Paleontology.
2014. NJ Stevens, EM Roberts, PM O’Connor. Paleobiological pattens in the late Oligocene Nsungwe Formation fauna, southwestern Tanzania. Journal of Vertebrate Paleontology.
2014. D Blackburn, EM Roberts, NJ Stevens. The earliest record of the endemic African family Ptychadenidae from the Oligocene Nsungwe Formation of Tanzania. Journal of Vertebrate Paleontology.
2014. K McNulty, NJ Stevens et al. A regional approach to East African Early Miocene paleobiology. Journal of Vertebrate Paleontology.
2014. PM O’Connor, J Sertich, NJ Stevens, EM Roberts. Developing a view of a southern Gondwanan faunal province: Information from the middle Cretaceous of central Africa. Journal of Vertebrate Paleontology.
2014. NJ Stevens, ER Seiffert, PM O’Connor, EM Roberts. Primates from the Nsungwe Formation of southwestern Tanzania: Fossil evidence of strepsirrhines, anthropoids, and an Oligocene divergence between Old World monkeys and apes. Am. J. Phys. Anthropol.
2014. B Benefit, NJ Stevens. Fossil evidence for the emergence of Old World monkeys: When, where and why. Am. J. Phys. Anthropol.
2014. K McNulty, NJ Stevens et al. Research on East African Catarrhine and Hominoid Evolution: results from the first year. Am. J. Phys. Anthropol.
2013. NJ Stevens, PM O’Connor, EM Roberts. Continental vertebrates from the late Oligocene Nsungwe Formation (Southwestern Tanzania) and faunal dynamics in sub-Saharan Africa during the Paleogene-Neogene transition. Geological Society of America.
2013. NJ Stevens, E Seiffert, PM O’Connor, EM Roberts. Primate diversity in the late Oligocene Nsungwe Formation of southwestern Tanzania. Society of Vertebrate Paleontology.
2013. EM Roberts, PM O’Connor, NJ Stevens. Dating Mesozoic-Paleogene continental vertebrate assemblages in Africa: An interdisciplinary approach. Society of Vertebrate Paleontology.
2013. E Naylor, C Krause, NJ Stevens. Phylogenetic and functional cues in micromammal tarsal bones from the late Oligocene Nsungwe Formation of southwestern Tanzania. Society of Vertebrate Paleontology.
2013. D Blackburn, EM Roberts, NJ Stevens. A Late Oligocene anuran fauna from the Nsungwe Formation, southwestern Tanzania. Society of Vertebrate Paleontology.
2013. W Stevens, K Claeson, NJ Stevens. Alestid fishes from the late Oligocene Nsungwe Formation of Tanzania. Society of Vertebrate Paleontology.
2013. PM O’Connor, NJ Stevens, EM Roberts, JJW Sertich, E Gorscak. Uncovering the Cretaceous terrestrial vertebrate record of sub-Saharan Africa: New information from the middle Cretaceous Galula Formation, Rukwa Rift Basin (East African Rift System), southwestern Tanzania. Geological Society of America.
2013. H Hilbert-Wolf, EM Roberts, C Mtelela, PM O’Connor, NJ Stevens. Constraining the timing of Cenozoic rifting and basin development in the Rukwa Rift Basin of the East African Rift System via detrital zircon geochronology. Geological Society of America.
2012.NJ Stevens, PM O’Connor, EM Roberts. A new taxon of Diamantomys from the late Oligocene Nsungwe Formation, Rukwa Rift Basin, southwestern Tanzania. Society of Vertebrate Paleontology.
2012. PM O’Connor, TL Hieronymus, NJ Stevens, JJW Sertich. Morphological evolution in basal mesoeucrocodylians: Tracking body size and dental trends in Notosuchia. Society of Vertebrate Paleontology.
2012. JA McCartney, NJ StevensA new ophidiofauna from the late Oligocene Nsungwe Formation of Tanzania and the rise of colubroid snakes (Reptilia: Serpentes). Society of Vertebrate Paleontology.
2012. WN Stevens, K Claeson, NJ StevensAlestid fishes from the late Oligocene Nsungwe Formation of Tanzania. Society of Vertebrate Paleontology.
2012. S Odunze, NJ StevensLN Cooper, GC Obi. Paleogene ichthyofauna of the Imo and Ameki Formations, southeastern Nigeria. Society of Vertebrate Paleontology.
2012. E Seiffert, NJ Stevens, B Kraatz, S Nasir. The US-Omani Dhofar Paleontology Project: Collaborative Exploration of the Cenozoic of Oman. ICGAPOM2012, Inetrnational Conference on the Geology of the Arabian Plate and the Oman Mountains.
2011. NJ Stevens, S Egberts, E Roberts, PM O’Connor. Faunal composition of late Oligocene Songwe Member of the Nsungwe Formation, Tanzania. Society of Vertebrate Paleontology. 31(S31):200A.
2011. E Gorscak, PM O’Connor, NJ Stevens. A basal titanosaurian from the Cretaceous Galula Formation, Rukwa Rift Basin, Tanzania. Society of Vertebrate Paleontology. 118A.
2011. HD O’Brien, D Dufeau, NJ Stevens. The evolution of cranial vasculature in ruminant artiodactyls. Integrative and Comparative Biology.
2011. PM O’Connor, JJW Sertich, NJ Stevens. Craniodental specialization in notosuchian Crocodyliformes: Linking morphology with ecology during the Cretaceous Period. Integrative and Comparative Biology.
2010. HD O’Brien, NJ Stevens. Paleogene gastropods from the Nsungwe Formation of the East African Rift, southwestern Tanzania. Geology.
2010. NJ Stevens. Evolution of the African fauna: Paleogene to Neogene faunal transitions recorded in the late Oligocene Nsungwe Formation of Tanzania. J. Vert Paleo. 30(S30).
2010. MD Gottfried, NJ Stevens. A new African record for Polypterid fishes from the late Oligocene of Tanzania. J. Vert Paleo.30(S3).
2010. LC Quyet, NJ Stevens, et al. Implication of videography for primate positional behavior. International Primate Congress IX.
2009. EM Roberts, PM O’Connor, NJ Stevens, MD Gottfried, S Ngasala. Reconstructing Cretaceous and Paleogene Paleoenvironments and drainage patterns of Central Africa. Geological Society of America Abstracts with Programs. 41(7): 243.
2009. NJ Stevens, MD Gottfried, PM O’Connor, EM Roberts, S Ngasala. Vertebrates from newly discovered lacustrine localities in the late Oligocene Nsungwe Formation, Rukwa Rift Basin, Tanzania. J. Vert. Paleo. 29(S3): 158A.
2009. S Odunze, NJ Stevens, LN Cooper, GC Obi, and J Eastman. Paleocene ichthyofauna and paleoenvironmental setting, Imo Formation, southestern Nigeria. J. Vert. Paleo. 29(S3): 185A.
2009. NJ Stevens, PM O’Connor, EM Roberts, MD Gottfried, J Temba. New primate fossils from the late Oligocene Rukwa Rift Basin of Tanzania. Am. J. Phys. Anthropol. 138(s48): 247-248.
2008. NJ Stevens. An emerging late Oligocene rodent fauna from the Nsungwe Formation, Rukwa Rift Basin, Tanzania. J. Vert. Paleo. 28(S3): 147A.
2008. VFH Simons, NJ Stevens. Limb and contact structure morphometrics in extant anurans: implications for interpreting fossil frog locomotor morphology. J. Vert. Paleo. 28(S3): 143A.
2008. PM O’Connor, J Sertich, NJ Stevens, MD Gottfried, EM Roberts. The evolution of mammal-like crocodyliforms (Crocodyliformes: Notosuchia) in Gondwana: New evidence from the middle Cretaceous Galula Formation, Rukwa Rift Basin, Southwestern Tanzania. J. Vert. Paleo. 28(S3): 122A.
2008. PM O’Connor, NJ Stevens, JJW Sertich, EM Roberts, MD Gottfried, TL Hieronymus, J Temba, ZA Jinnah. A notosuchian crocodyliform from the Galula Formation, Red Sandstone Group (middle Cretaceous) of southwestern Tanzania. The Third Annual Latin American Congress of Vertebrate Paleontology, Neuquén, Argentina.
2008. NJ Stevens. Linking in-situ and ex-situ approaches for studying primate locomotor responses to support stability. International Primate Congress VIII.
2008. FB Ralainsolo, JH Ratsimbazafy, NJ Stevens. Consumption of fall-back foods by Eulemur albocollaris at Manombo Forest, SE Madagascar. International Primate Congress VIII.
2008. NJ Stevens, AS Schulp, M. Wosabi. The Yemen Paleontology Project: Borderless Paleontology. Abs. 9th Cong. Geol. Arab World.
2008. M. Wosabi, AS Schulp, NJ Stevens. Dinosaur ichnosites: Evidence from Yemen. Abs. 9th Cong. Geol. Arab World.
2007. NJ Stevens, S Ngasala, MD Gottfried, PM O’Connor, EM Roberts. A hyracoid from the Rukwa Rift Basin, Paleogene of Tanzania. J. Vert. Paleo.
2007. EM Roberts, PM O’Connor, TL Hieronymus, MD Gottfried, NJ Stevens. Taphonomy of two Cretaceous dinosaur quarries, Tanzania, Africa: New insights into regional paleoclimate, paleoenvironments and paleobiogeography. J. Vert. Paleo.
2007. AS Schulp, M Al-Wosabi, NJ Stevens. The first dinosaur tracks from the Arabian Peninsula. J. Vert. Paleo.
2007. MD Gottfried, NJ Stevens, PM O’Connor, EM Roberts, S Ngasala. A new fossil record for the African lungfish Protopterus from the Paleogene of Tanzania. J. Vert. Paleo.
2007. EM Roberts, PM O’Connor, RA Armstrong, NJ Stevens, MD Gottfried. U-Pb geochronology of detrital zircons from the Rukwa Rift Basin of Tanzania: New data on the pre-Neogene tectonic and sedimentary evolution of the western branch of the East African Rift System. Geol.
2007. EM Roberts, RA Armstrong, PM O’Connor, NJ Stevens, MD Gottfried. Late Mesozoic and early Tertiary sedimentary and tectonic evolution of the Rukwa Rift Basin: The 6th PESGB/HGS African Conference—Africa’s Petroleum Systems: From Outcrop to Deepwater, p. 45.
2007. EM Roberts, PM O’Connor, NJ Stevens, MD Gottfried. New Cretaceous and Palaeogene vertebrates from the East African Rift, Tanzania: stratigraphic, tectonic, and palaeobiogeographic implications: 14th Biennial Palaeontological Society of South Africa Annual Meeting Abstracts, p. 20.
2007. VFH Simons, NJ Stevens. Functional Implications of the locomotor morphology of Paleogene (~Oligocene) African anurans. J. Morph.
2007. KA Wright, CA Ruff, NJ Stevens, HH Covert, T Nadler. Long bone articular and diaphyseal structure in douc langurs: evidence of suspensory adaptations. Am. J. Phys. Anthropol.
2007. KA Wright, NJ Stevens, DN Thanh, HH Covert, T Nadler. Arboreal and terrestrial substrate use by the endangered limestone langurs of Vietnam. Int. Comp. Biol.
2006. NJ Stevens, S Ngasala, MD Gottfried, PM O’Connor, EM Roberts. Macroscelideans from the Oligocene of southwestern Tanzania. J. Vert. Paleo. 26(3): 128A.
2006. NJ Stevens, K Carlson. Bridging the gaps between experimental and naturalistic approaches in the study of primate behavior. Int. J. Primatol.
2006. NJ Stevens, JH Ratsimbazafy, KAI Nekaris. Keeping the balance: Use of kinematic techniques in the natural setting to examine strepsirhine arboreality. Int. J. Primatol.
2006. KA Wright, NJ Stevens, HH Covert and T Nadler. Hanging around: a comparison of suspensory postures in langurs and gibbons at the Endangered Primate Research Center, Cuc Phuong National Park, Vietnam. Int. J. Primatol.
2006. NJ Stevens, KA Wright, HH Covert, T Nadler. Tail posture during arboreal quadrupedalism in four species of leaf monkeys at the Endangered Primate Research Center, Cuc Phuong National Park, Vietnam. Am. J. Phys. Anthropol. 129(S42)
2006. NJ Stevens, KA Wright, HH Covert, T Nadler. A comparison of vertebral kinematics of Hatinh and Delacour's langurs in the Cuc Phuong National Park of Vietnam. Int. Comp. Biol. Abs.
2006. BW Wright, NJ Stevens, L Ulibarri, J O’Brien, HH Covert, T Nadler. Relationships between leaf toughness and food processing behavior among four Vietnam leaf monkeys. Int. Comp. Biol. Abs.
2005. NJ Stevens, PM O’Connor, MD Gottfried, EM Roberts, S Ngasala, S Kapilima. New Paleogene mammals and other vertebrates from the Rukwa Rift Basin, Tanzania. J. Vert. Paleo. 25: 118A.
2005. PM O’Connor, MD Gottfried, EM Roberts, NJ Stevens, S Ngasala. New dinosaurs and other vertebrate fossils from the Cretaceous Red Sandstone Group, Rukwa Rift Basin, southwestern Tanzania. J. Vert. Paleo. 25:97A.
2005. MD Gottfried, PM O'Connor, EM Roberts, NJ Stevens, R Chami. First Cretaceous lungfish from Tanzania: ceratodontid from the Rukwa Rift Basin. J. Vert. Paleo. 25:65A.
2005. KAI Nekaris, NJ Stevens. All lorises are not slow: Rapid arboreal locomotion in the newly recognized red slender loris (Loris tardigradus tardigradus) of southwestern Sri Lanka. 2005 Am. J. Phys. Anthropol. 40:156.
2005. JA Hancock, AR Biknevicius, SM Reilly, NJ Stevens. Head bobbing and terrestrial locomotion in Tinamous (Eudromia elegans). Int. Comp. Biol. Abs. 2005.
2004. NJ Stevens, PM O’Connor, MD Gottfried, EM Roberts, SD Kapilema. A new Paleogene fauna from the East African Rift, southwestern Tanzania. J. Vert. Paleo. 24(3):118A.
2004. JA Holman, NJ Stevens, MD Gottfried, PM O’Connor, EM Roberts. An enigmatic neobatrachian from the Paleogene of southwestern Tanzania. J. Vert. Paleo. 24(3):71A.
2004. NJ Stevens, CP Heesy. Malagasy faunal origins: Reliability of biogeographic reconstructions for determining the area of origin of island taxa. Cong. Int. Primatol. Soc. Abs. 2004.
2004. NJ Stevens Stability, substrate characteristics, and limb coordination: the ecological relevance of gait. J. Morph. 260(3):331.
2004. Hancock, JA, AR Biknevicius, KD Earls, NJ Stevens, SM Reilly. “Groucho Running” in Tinamous. J. Morph. 260(3):297.
2004. NJ Stevens Influence of support type upon stride duration and duty factor during primate arboreal quadrupedalism. Am. J. Phys. Anthropol. 38:188.
2003. O’Connor, PM, MD Gottfried, EM Roberts, NJ Stevens, FD Jackson, EL Rasmusson. Closing the African Gap: A new Cretaceous vertebrate fauna from Tanzania. J. Vert. Paleo. 84A.
2003. NJ Stevens. Does branch stability influence quadrupedal locomotion in prosimian primates? Am. J. Phys. Anthropol. Suppl. 36:200-201.
2003. Biknevicius AR, NJ Stevens. Differential function of trailing and leading limbs in galloping dogs. Int. Comp. Biol. Abs. 2003:117.
2003. Lammers, AR, AJ Parchman, KD Earls, AR Biknevicius, SM Reilly, NJ Stevens. The effects of incline on limb forces in a quadrupedal mammal. Int. Comp. Biol. Abs. 2003:220-221.
2002. NJ Stevens, CP Heesy. Effects of substrate orientation on inclination of the orbital plane in Loris tardigradus. Int. Comp. Biol. Abs. 2002.
2002. NJ Stevens, Effects of branch orientation on arboreal quadrupedalism in the slender loris. Am. J. Phys. Anthropol. Suppl. 34: 148.
Pedagogical Presentations
2009. NJ Stevens, J Temba, P Msemwa, S Ngasala. Science outreach to the African Child. Including Children Conference, Institute for the African Child.
2005. NJ Stevens and D Thomas. Strategies for problem based learning in the Patient Centered Continuum, OUCOM. 2005 Ohio University Spotlight on Learning.
2004. NJ Stevens, D Thomas, E Godfried, R Godfried, E Rowland, W Duerfeldt, M Grijalva, L Witmer, P O’Connor, M Berryman, J Edinger, P Dane, J Brose. Active Learning Best Practices in the Patient Centered Continuum. 2004 AACOM Meetings, Washington, DC.
2004. J Edinger, P Dane, B Biegalke, S Carter, N Stevens, D Thomas. A curricular choice. 2004 AACOM Meetings, Washington, DC.
2003. P Dane, J Edinger and NJ Stevens. Problem-based learning: How can I engage students in MY course? 2003 Ohio University Spotlight on Learning.