Spencer Lucas in the field in
northern New Mexico.

Selected publications

Joyce, W.G., Lucas, S.G., Scheyer, T.M., Heckert, A.B., and Hunt, A.P. 2009 “A thin-shelled reptile from the Late Triassic of North America and the origin of the turtle shell”: Proc. R. Soc. B. vol.276 pp. 507–513. (PDF)

Lucas, S.G. 2009 “Global Jurassic tetrapod biochronology” in Volumina Jurassica, vol. 6 pp. 99–108. (PDF)

Renesto, S.C., Spielmann, J.A., and Lucas, S.G. 2009 “The oldest record of drepanosaurids (Reptilia, Diapsida) from the Late Triassic (Adamanian Placerias Quarry, Arizona, USA) and the stratigraphic range of the Drepanosauridae”: N. Jb. Geol. Paläont. Abh. vol.252/3 pp. 315–325. (PDF)

Heckert, A.B., Lucas, S.G., Rinehart, L.F. and Hunt, A.P. 2008, “A new genus and species of sphenodontian from the Ghost Ranch Coelophysis Quarry (Upper Triassic: Apachean), Rock Point Formation, New Mexico, USA”: Palaeontology, vol.51/4, pp. 827–845. (PDF)

Minter, N.J., Lucas, S.G., Lerner, A.J and Braddy, S. J. 2008, "Augerinoichnus helicoidalis, a new helical trace fossil from the nonmarine Permian of New Mexico": Journal of Paleontology, vol.82/6, pp.1201–1206. (PDF)

Lucas, S.G. and Tanner, L.H. 2007, "The nonmarine Triassic-Jurassic boundary in the Newark Supergroup of eastern North America": Earth Science Reviews, vol.84, pp.1-20. (PDF)

Tanner, L.H. and Lucas, S.G. 2007, "The Moenave Formation: Sedimentologic and stratigraphic context of the Triassic-Jurassic boundary in the Four Corners area, southwestern U.S.A.": ScienceDirect, vol.244, pp.111-125. (PDF)

Lucas, S.G. 2007, "Tetrapod footprint biostratigraphy and biochronology": Ichnos, vol.14, pp.5-38. (PDF)

Lucas, S.G., and Tanner, L.H. 2007, "Tetrapod biostratigraphy and biochronology of the Triassic-Jurassic transition on the southern Colorado Plateau, USA": ScienceDirect, vol.244, pp.242-256. (PDF)

Minter, N.J., Krainer, K., Lucas, S.G., Braddy, S.J., and Hunt, A.P. 2007, "Palaeoecology of an Early Permian playa lake trace fossil assemblage from Castle Peak, Texas, USA": ScienceDirect, vol.246, pp.390-423. (PDF)

Hunt, A.P., and Lucas, S.G. 2007, "Tetrapod ichnofacies: A new paradigm": Ichnos, vol.14, pp.59-68. (PDF)

Lucas, S.G., Taylor, D.G., Geux, J., Tanner, L.H., and Krainer, K. 2007, "The proposed global stratotype section and point for the base of the Jurassic system in the New York Canyon area, Nevada, USA": New Mexico Museum of Natural History and Science Bulletin, vol.40, pp.139-168. (PDF)

Lucas, S.G., Spielmann, J.A., Rinehart, L.F., Heckert, A.B., Herne, M.C., Hunt, A.P., Foster, J.R., and Sullivan, R.M. 2006, "Taxonomic status of Seismosaurus Hallorum, a Late Jurassic sauropod dinosaur from New Mexico": New Mexico Museum of Natural History and Science Bulletin, vol.36, pp.149-162. (PDF)

Lucas, S.G. 2006, "A new amynodontid (Mammalia, Perissodactyla) from the Eocene Clarno Formation, Oregon, and its biochronological significance": PaleoBios, vol.26, no.2, pp.7-20. (PDF)

Hill, R.V., and Lucas, S.G. 2006, "New data on the anatomy and relationships of the Paleocene crocodylian Akanthosuchus langstoni": Acta Palaeontologica Polonica, vol.51, no.3, pp.455-464. (PDF)

Minter, N.J., Buatois, L.A., Lucas, S.G., Braddy, S.J., and Smith, J.A. 2006, "Spiral-shaped graphoglyptids from an Early Permian intertidal flat": Geology, vol.34, no.12, pp.1057-1060. (PDF)

Lucas, S.G. 2006, "Global Permian tetrapod biostratigraphy and biochronology": from Lucas, S.G., Cassinis, G., and Schneider, J.W. (eds) 2006. Non-Marine Permian Biostratigraphy and Biochronology. Geological Society, London Special Publications, vol.265, pp.65-93. (PDF)

Lucas, S.G., Schneider, J.W., and Cassinis, G. 2006, "Non-marine Permian biostratigraphy and biochronology: an introduction": from Lucas, S.G., Cassinis, G., and Schneider, J.W. (eds) 2006. Non-Marine Permian Biostratigraphy and Biochronology. Geological Society, London Special Publications, vol.265, pp.1-14. (PDF)

Lucas, S.G. 2006, "The Psittacosaurus biochron, Early Cretaceous of Asia": Cretaceous Research, vol.27, pp.189-198. (PDF)

Lucas, S.G., 2005, "Twenty-Five Years of Mass Extinctions and Impacts": from Geotimes, v.50, no.2 pp.28-32. (PDF)

Tanner, L.H., Lucas, S.G., and Chapman, M.G., 2004, "Assessing the record and causes of Late Triassic extinctions": Earth Science Reviews, v.65, pp.103-139. (PDF)

Lucas, S.G., 2004, "A global hiatus in the Middle Permian tetrapod fossil record":Stratigraphy, v.1, pp.47-64. (PDF)

Lucas, S.G., and Tanner, L.H., 2004, "Late Triassic extinction events": Albertiana, v.31, pp.31-40. (PDF)