Thomas E. Williamson

Vertebrate Paleontology, Stratigraphy

Late Cretaceous - Publications



Publications resulting from this research

Carr, T. D. and T. E. Williamson. 1999. A new tyrannosaurid (Theropoda: Coelurosauria) from the San Juan Basin of New Mexico. Journal of Vertebrate Paleontology 19:36A (Abstract).

Carr, T. D. and T. E. Williamson. 2000. A review of Tyrannosauridae (Dinosauria, Coelurosauria) from New Mexico. New Mexico Museum of Natural History Bulletin17:113-145. 

Carr, T. D. and T. E. Williamson. 2001. Resolving Tyrannosaurid diversity: skeletal remains referred to Aublysodon belong to Tyrannosaurus rex and Daspletosaurus. Journal of Vertebrate Paleontology 21:38A (Abstract).

Carr, T. D. and T. E. Williamson. 2002. The diversity of New Mexico Tyrannosauroidea. New Mexico Geology 24 (Abstract).

Carr, T. D. and T. E. Williamson. 2002. Evolution of basal Tyrannosauroidea from North America. Journal of Vertebrate Paleontology 22:41A (Abstract).

Carr, T. D. and T. E. Williamson. 2005. A reappraisal of tyrannosauroids from Iren Dabasu, Inner Mongolia, People’s Republic of China. Journal of Vertebrate Paleontology 25:42 (Abstract).

Carr, T. D. and T. E. Williamson. 2006. Paleopathology in New Mexican tyrannosaurs from the upper Campanian Kirtland Formation. New Mexico Geology. New Mexico Geology. 28:56 (Abstract).

Carr, T. D. and T. E. Williamson. 2010. Bistahieversor sealeyi gen. et sp. nov., a new tyrannosaur from New Mexico and the origin of deep snouts in Tyrannosauroidea. Journal of Vertebrate Paleontology 30:1-16.

Carr, T. D., Williamson, T. E., and Schwimmer, D. R. 2005. A new genus and species of tyrannosauroid from the Late Cretaceous (Middle Campanian) Demopolis Formation of Alabama. Journal of Vertebrate Paleontology 25:119-143.

Diegert, C. F. and T. E. Williamson. 1998. A digital acoustic model of the lambeosaurine hadrosaur Parasaurolophus tubicen. Journal of Vertebrate Paleontology 18:38A (Abstract).

Farke, A. A. and T. E. Williamson. 2005. A chasmosaurine ceratopsid parietal from the Naashoibito Member, Ojo Alamo Formation of New Mexico, with implications for certopsid systematics and biogeography. Journal of Vertebrate Paleontology 25:55A (Abstract).

Farke, A. and T. E. Williamson. 2006. A ceratopsid dinosaur parietal from New Mexico and its implications for ceratopsid biogeogreaphy and systematics. Journal of Vertebrate Paleontology 26:1018-1020.

Schott, R., D. Evans, T. E. Williamson, T. Carr, and M. Goodwin. 2008. The anatomy and systematics of Colepiocephale lambei (Ornithischia: Pachycephalosauridae) revised. Journal of Vertebrate Paleontology 28:138A (Abstract).

Schott, R., D. Evans, T. E. Williamson, T. Carr, and M. Goodwin. 2009. The anatomy and systematics of Colepiocephale lambei (Dinosauria: Pachycephalosauridae). Journal of Vertebrate Paleontology 29:771-786.

Sealey, P. L., J. A. Smith, and T. E. Williamson. 2005. An unusual Pentaceratops from New Mexico. Journal of Vertebrate Paleontology 25:113A (Abstract).

Smith, J. A. and T. E. Williamson. 2005. An unusual Pentaceratops from New Mexico. New Mexico Geology 27:45 (Abstract).

Sullivan, R. M. and T. E. Williamson. 1996. A new skull of Parasaurolophus (long-crested form) from New Mexico: external and internal (CT scans) features and their functional implications.  Journal of Vertebrate Paleontology 16:68A (Abstract).

Sullivan, R. M. and T. E. Williamson. 1997. Additions and corrections to Sternberg’s San Juan Basin collection, Paleontological Museum, University of Uppsala, Sweden.  New Mexico Geological Society, Guidebook 48:255-257.

Sullivan, R. M. and T. E. Williamson. 1999. A new skull of Parasaurolophus (Dinosauria: Hadrosauridae) from the Kirtland Formation of New Mexico and a revision of the genus. New Mexico Museum of Natural History Bulletin 15, 52 pp.

Weil, A. and T. E. Williamson. 2004. Successive multituberculate mammal assemblages in the Campanian – early Paleocene of the San Juan Basin, New Mexico. Geological Society of America Abstracts with Programs 36:179 (Abstract).

Weil, A. and T. E. Williamson. 2007. Late Cretaceous through earliest Tertiary evolution of multituberculate mammals in the San Juan Basin of New Mexico, and their biogeographic context.” Joint South-Central and North-Central Sections, Geological Society Abstracts with Programs 39:15 (Abstract).

Williamson, T. E. 1996. ?Brachychampsa sealeyi, sp. nov., (Crocodylia, Alligatoroidea) from the Upper Cretaceous (lower Campanian) Menefee Formation, northwestern New Mexico. Journal of Vertebrate Paleontology 16:421-431.

Williamson, T. E. 1996. A tyrannosaurid skeleton from the Upper Cretaceous Kirtland Formation, San Juan Basin, New Mexico. New Mexico Geology 18:55 (Abstract).

Williamson, T. E. 1996. A centrosaurine ceratopsian dinosaur from the Upper Cretaceous (early Campanian) Menefee Formation, San Juan Basin, New Mexico.  Journal of Vertebrate Paleontology 16:73A (Abstract).

Williamson, T. E. 1997. A new Late Cretaceous (early Campanian) vertebrate fauna from the Allison Member, Menefee Formation, San Juan Basin, New Mexico.  New Mexico Museum of Natural History, Bulletin 11:51-59.

Williamson, T. E. 1999. A partial skull of a pachycephalosaurian dinosaur from the Upper Cretaceous Kirtland Formation, San Juan Basin, northwestern New Mexico. New Mexico Geology 21:44 (Abstract).

Williamson, T. E. 2000. Eusuchian crocodilians from the Fruitland and Kirtland Formations, San Juan Basin, New Mexico. New Mexico Geology 22:52  (Abstract).

Williamson, T. E. 2000. Additional remains of “Mesosuchian” goniopholidid crocodilians from the Upper Cretaceous (upper Campanian) Fruitland and Kirtland Formations, San Juan Basin, New Mexico. New Mexico Geology 22:52 (Abstract). 

Williamson, T. E. 2000. Review of Hadrosauridae (Dinosauria, Ornithischia) from the San Juan Basin, New Mexico. New Mexico Museum of Natural History Bulletin 16:191-213.

Williamson, T. E. and T. D. Carr. 1999. A new tyrannosaurid (Dinosauria: Theropoda) partial skeleton from the Upper Cretaceous Kirtland Formation, San Juan Baisn, New Mexico. New Mexico Geology 21:42 (Abstract).

Williamson, T. E. and T. D. Carr. 2001. Dispersal of pachycephalosaurs and Tyrannosauroids between Asia and North America. Journal of Vertebrate Paleontology 21:114A (Abstract).

Williamson, T. E. and T. D. Carr. 2002. A juvenile pachycephalosaur (Dinosauria: Pachycephalosauridae) from the Fruitland Formation. New Mexico Geology 24 (Abstract).

Williamson, T. E. and T. D. Carr. 2003. a new genus of derived pachycephalosaurian from western North America. Journal of Vertebrate Paleontology 22:779-801.

Williamson, T. E. and T. D. Carr. 2005b. New pachycephalosaur specimens from the Late Cretaceous of New Mexico. New Mexico Geology 27:45 (Abstract).

Williamson, T. E. and T. D. Carr. 2006. First Record of a pachycephalosaurine (Ornithischia: Pachycephalosauria) from the Dinosaur Park Formation, Alberta, Canada. New Mexico Museum of Natural History Bulletin 35:323-327.

Williamson, T. E., J. I. Kirkland and S. G. Lucas. 1993. Selachians from the Greenhorn Cyclothem ("middle" Cretaceous: Cenomanian-Turonian), Black Mesa, Arizona, and the paleogeographic distribution of Late Cretaceous selachians.  Journal of Paleontology 67:447-474.

Williamson, T. E., B. S.Kues, G. S. Weissmann, T. A. Stidham, and S. L. Yurchyk. 2008. A Cretaceous feather from the Upper Cretaceous (lower Campanian) Point Lookout Sandstone, northwestern New Mexico. New Mexico Geology 30:61 (Abstract).

Williamson, T. E., B. S.Kues, G. S. Weissmann, T. A. Stidham, and S. L. Yurchyk. 2009. A Cretaceous feather from the Upper Cretaceous (lower Campanian) Point Lookout Sandstone, San Juan Basin, northwestern New Mexico. Cretaceous Research 30:547-550.

Williamson, T. E. and S. G. Lucas. 1989. Selachians from the Upper Cretaceous (Cenomanian-Turonian) Mancos Formation, Black Mesa Basin, Northern Arizona.  Southwestern Geology.  Abstracts of the 42nd Annual symposium on Southwestern Geology and Paleontology, p. 26 (Abstract).

Williamson, T. E., and S. G. Lucas. 1989. Late Cretaceous vertebrates from the Mulatto Tongue of the Mancos Shale, Central New Mexico. New Mexico Journal of Science 30:27-34.

Williamson, T. E. and S. G. Lucas. 1990. Late Cretaceous Selachian fauna from the Mulatto Tongue of the Mancos Shale, central New Mexico.  New Mexico Geology 3:19 (Abstract). 

Williamson, T. E. and S. G. Lucas. 1991. Paleocene dinosaurs.  Geological Society of America, Abstracts with Programs 23:A185 (Abstract)

Williamson, T. E. and S. G. Lucas. 1992. Selachian fauna from the Upper Cretaceous (Coniacian) El Vado Sandstone Member of the Mancos Shale, San Juan Basin, New Mexico. New Mexico Geological Society, Guidebook 43:17-20.

Williamson, T. E. and S. G. Lucas. 1992. Vertebrate fauna from the Upper Cretaceous (Campanian) Pictured Cliffs Sandstone, Mesa Portales, New Mexico. New Mexico Geological Society, Guidebook 43:26-29.

Williamson, T. E., S. G. Lucas and J. I. Kirkland. 1991. The Cretaceous Elasmobranch Ptychodus decurrens from North America.  Geobios 24:595-599.

Williamson, T. E., S. G. Lucas and R. Pence. 1989. Selachians from the Hosta Tongue of the Point Lookout Sandstone (Upper Cretaceous: Santonian), Central New Mexico.  New Mexico Geological Society, Guidebook 40:239‑245.

Williamson, T. E., D. Nichols, and A. Weil. 2008. Paleocene palynomorph assemblages from the Nacimiento Formation, San Juan Basin, New Mexico. New Mexico Geology 30:3-11.

Williamson, T. E. and P. S. Sealey. 1995. Additions to the vertebrate fauna from the Upper Cretaceous (lower Campanian) Allison Member, Menefee Formation, southeastern San Juan Basin, New Mexico. New Mexico Geology 17:29 (Abstract).

Williamson, T. E. and P. L. Sealey. 1999. A pachycephalosaurid (Ornithischia: Pachycephalosauria) skull from the Upper Cretaceous Kirtland Formation, San Juan Basin, New Mexico. Journal of Vertebrate Paleontology 19:84A (Abstract).

Williamson, T. E., K. Shimida, and K. Sealey. 2009. A new gigantic pycnodont fish from the Upper Cretaceous Juana Lopez Member, Mancos Shale of New Mexico. New Mexico Geology 31:47-48 (abstract).

Williamson, T. E. and R. M. Sullivan. 1996. A preliminary report on a new skull of Parasaurolophus from the Upper Cretaceous Kirtland Formation, San Juan Basin, New Mexico. New Mexico Geology 18:55 (Abstract).

Williamson, T. E. and R. M. Sullivan. 1997. Reinterpretation of a Parasaurolophus skull from the Upper Cretaceous (Campanian) Kaiparowits Formation, Utah.  Journal of Vertebrate Paleontology 17:84 (Abstract).

Williamson, T. E. and R. M. Sullivan. 1997. Theropod specimens from New Mexico in the Paleontological Museum, University of Uppsala, Sweden. New Mexico Geology 19: (Abstract).

Williamson, T. E. and R. M. Sullivan. 1998. A new local fauna, the Willow Wash local fauna, from the Upper Cretaceous (Campanian), Kirtland Formation, New Mexico. Journal of Vertebrate Paleontology 18:86A (Abstract).

Williamson, T. E. and A. Weil. 2001. Dinosaurs from microvertebrate sites in the Upper Cretaceous Fruitland and Kirtland Formations, San Juan Basin, New Mexico. Geological Society of America, Rocky Mountain and South-Central Sections, Abstracts with Programs (Abstract).

Williamson, T. E. and A. Weil. 2001. New microvertebrate localities in the Upper Cretaceous Fruitland and Kirtland formations, San Juan Basin, New Mexico. New Mexico Geology 23:64 (Abstract). 

Williamson, T. E. and A. Weil. 2008b. Stratigraphic distribution of sauropods in the Upper Cretaceous of the San Juan Basin, New Mexico, with comments on North America’s Cretaceous ‘sauropod hiatus.’ Journal of Vertebrate Paleontology 28:1218-1223.

Suggested reading:

Cifelli, R. L., J. J. Eberle, et al. (2004). "Mammalian biochronology of the latest Cretaceous."  2004. Mammalian biochronology of the latest Cretaceous. pp. 21–42 in M. O. Woodburne (ed.), Late Cretaceous and Cenozoic mammals of North America: Biostratigraphy and Geochronology, Columbia University Press, New York. 

Kues, B. S. (2008). The Paleontology of New Mexico. Albuquerque: University of New Mexico Press. 428 pp.


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