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Otis Chalk Quarry 3, Howard County, Texas, USA

Lat/Long (Decimal)32.1721,-101.247
Co-ordinates Derivationbased on nearby landmark
Given LocationTexas, United States
Mindat.org Region (for given coordinates)Howard County, Texas, USA

Collections

CollectionReferenceStratigraphic NameCommentsLithologyAge
Otis Chalk Quarry 3, TMM 31100Spielmann J. A., Lucas S. G., et al (2008)Dockum - Colorado Cityvariously referred to the Iatan or Colorado City of the Dockum Group; low in formationmudstone228 - 208.5 Ma
Late/Upper Triassic

Recorded Fossils

Accepted NameHierarchyAge
Turseodus sp.
genus
Animalia : Chordata : Actinopterygii : Palaeoniscidae : Turseodus228 - 208.5 Ma
Late/Upper Triassic
Koskinonodon perfectus
species
Animalia : Chordata : Osteichthyes : Temnospondyli : Metoposauridae : Koskinonodon : Koskinonodon perfectus228 - 208.5 Ma
Late/Upper Triassic
Dromomeron gregorii
species
Animalia : Chordata : Reptilia : Lagerpetonidae : Dromomeron : Dromomeron gregorii228 - 208.5 Ma
Late/Upper Triassic
Archosauria
unranked clade
Animalia : Chordata : Reptilia : Eosuchia : Archosauria228 - 208.5 Ma
Late/Upper Triassic
Phytosauria
unranked clade
Animalia : Chordata : Reptilia : Eosuchia : Phytosauria228 - 208.5 Ma
Late/Upper Triassic
Poposaurus gracilis
species
Animalia : Chordata : Reptilia : Poposauridae : Poposaurus : Poposaurus gracilis228 - 208.5 Ma
Late/Upper Triassic
Poposaurus langstoni
species
Animalia : Chordata : Reptilia : Eosuchia : Poposaurus : Poposaurus langstoni228 - 208.5 Ma
Late/Upper Triassic
Trilophosaurus buettneri
species
Animalia : Chordata : Reptilia : Trilophosauridae : Trilophosaurus : Trilophosaurus buettneri228 - 208.5 Ma
Late/Upper Triassic
Triopticus primus
species
Animalia : Chordata : Reptilia : Triopticus : Triopticus primus228 - 208.5 Ma
Late/Upper Triassic
Brachysuchus megalodon
species
Animalia : Chordata : Reptilia : Thecodontia : Parasuchidae : Brachysuchus : Brachysuchus megalodon228 - 208.5 Ma
Late/Upper Triassic
Parasuchus bransoni
species
Animalia : Chordata : Reptilia : Phytosauridae : Paleorhinus : Paleorhinus bransoni228 - 208.5 Ma
Late/Upper Triassic
Postosuchus kirkpatricki
species
Animalia : Chordata : Reptilia : Crocodylia : Rauisuchidae : Postosuchus : Postosuchus kirkpatricki228 - 208.5 Ma
Late/Upper Triassic
Shuvosaurus inexpectatus
species
Animalia : Chordata : Reptilia : Shuvosauridae : Shuvosaurus : Shuvosaurus inexpectatus228 - 208.5 Ma
Late/Upper Triassic
Silesauridae
unranked clade
Animalia : Chordata : Reptilia : Eosuchia : Silesauridae228 - 208.5 Ma
Late/Upper Triassic
Coahomasuchus kahleorum
species
Animalia : Chordata : Reptilia : Stagonolepididae : Coahomasuchus : Coahomasuchus kahleorum228 - 208.5 Ma
Late/Upper Triassic
Longosuchus meadei
species
Animalia : Chordata : Reptilia : Eosuchia : Stagonolepididae : Longosuchus : Longosuchus meadei228 - 208.5 Ma
Late/Upper Triassic
Lucasuchus hunti
species
Animalia : Chordata : Reptilia : Thecodontia : Lucasuchus : Lucasuchus hunti228 - 208.5 Ma
Late/Upper Triassic
Chindesaurus bryansmalli
species
Animalia : Chordata : Reptilia : Dinosauria : Herrerasauridae : Chindesaurus : Chindesaurus bryansmalli228 - 208.5 Ma
Late/Upper Triassic

References

Sawin H. J. (1944) Amphibians from the Dockum Triassic of Howard County, Texas, Contributions to Geology, The University of Texas 4401, 361-399
Sawin H. J. (1947) The pseudosuchian reptile Typothorax meadei, Journal of Paleontology 21, 201-238
Murry P. A. (1986) Vertebrate paleontology of the Dockum Group, western Texas and eastern New Mexico, The Beginning of the Age of Dinosaurs: Faunal Change Across the Triassic–Jurassic Boundary. Cambridge University Press, Cambridge, 109-137
Elder R. L. (1987) Taphonomy and paleoecology of the Dockum Group, Howard County, Texas, Journal of the Arizona-Nevada Academy of Science 22 1, 85-94
Long R. A., Murry P. A. (1995) Late Triassic (Carnian and Norian) tetrapods from the southwestern United States, New Mexico Museum of Natural History and Science Bulletin 4, 1-254
Spielmann J. A., Lucas S. G., et al (2008) The Late Triassic archosauromorph Trilophosaurus, New Mexico Museum of Natural History and Science Bulletin 43, 1-177
Nesbitt S. J., Irmis R. B., et al (2009) Hindlimb osteology and distribution of basal dinosauromorphs from the Late Triassic of North America, Journal of Vertebrate Paleontology 29 2, 498-516 doi:10.1671/039.029.0218
Nesbitt S. J., Sidor C. A., et al (2010) Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira, Nature 464, 95-98 doi:10.1038/nature08718
Parker W. G. (2016) Revised phylogenetic analysis of the Aetosauria (Archosauria: Pseudosuchia); assessing the effects of incongruent morphological character sets, PeerJ 4, e1583
Stocker M. R., Nesbitt S. J., et al (2016) A Dome-Headed Stem Archosaur Exemplifies Convergence among Dinosaurs and Their Distant Relatives, Current Biology 26 19, 2674-2680
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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