Otis Chalk Quarry 2, TMM 31099 (Dockum Formation): Norian, Texas

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Metoposauridae
Buettneria ? bakeri Case 1931
1 specimen
    = Buettneria perfecta Case 1922
Long and Murry 1995
recombined as Koskinonodon perfectus
TMM 31099-12B, skull and lower jaw, fragmentary skull with lower jaws, numerus vertebrae, two interclavicles and one right and one left clavicle
Reptilia
Rhynchosauria indet. (Osborn 1903)
Spielmann et al. 2006 1 specimen
TMM 31099-11 partim, humerus
Trilophosaurus sp. Case 1928
Chatterjee 1986 140 specimens
    = Trilophosaurus buettneri Case 1928
Heckert et al. 2006
More than 140 NMMNH and TMM specimens, mostly postcrania. See detailed list of material in Spielmann et al. (2008: p. 155)
cf. Trilophosaurus buettneri Case 1928
Spielmann et al. 2006 1 specimen
TMM 31099-11 partim, radius
Malerisaurus langstoni n. sp. Chatterjee 1986
Chatterjee 1986 1 specimen
synonym of Trilophosaurus buettneri
TMM 31099-11 (holotype); Spielmann et al. (2006) restricted holotype to cranial elements only
? Aetosauria indet. (Lydekker 1889)
Spielmann et al. 2006 1 specimen
TMM 31099-11 partim, braincase
Reptilia - Parasuchidae
? Parasuchidae indet. Lydekker 1885
Spielmann et al. 2006 2 specimens
TMM 31099-11 partim, interclavicle, pelvis
see common names

Geography
Country:United States State/province:Texas County:Howard
Coordinates: 32.2° North, 101.3° West (view map)
Paleocoordinates:6.9° North, 41.6° West
Basis of coordinate:estimated from map
Altitude:740 meters
Geographic resolution:small collection
Time
Period:Triassic Epoch:Late/Upper Triassic
Stage:Norian 10 m.y. bin:Triassic 4
*Period:Late/Upper Triassic
*International age/stage:Carnian - Carnian
Key time interval:Norian
Age range of interval:228.00000 - 208.50000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Dockum Formation:Colorado City
Stratigraphic resolution:bed
Stratigraphy comments: "continental red-bed sequence"; variously referred to the Iatan or Colorado City Members of the Dockum Group; low in Dockum Group
Lithology and environment
Primary lithology:red silty mudstone
Secondary lithology:lenticular conglomeratic sandstone
Includes fossils?Y
Lithology description: "dominant lithology is red mudstone intercalated with lenses of fine-grained sandstones and conglomerates."
Environment:crevasse splay
Geology comments: "continental red-bed sequence accumulated in a mosaic of fluvial, lacustrine, and flood plain deposits"
Taphonomy
Modes of preservation:body
Lagerst�tten type:concentrate
Degree of concentration:-single event
Size of fossils:macrofossils
Preservation of anatomical detail:good
Articulated whole bodies:some
Temporal resolution:snapshot
Collection methods and comments
Collection excludes:species names
Collection methods:selective quarrying,chemical,mechanical,field collection,survey of museum collection
Reason for describing collection:taphonomic analysis
Museum repositories:NMMNH,TMM
Collection method comments: ETE Size: .; ETE reference list: 1003, 770, 673, 793, 786, 772, 794, 801, 769, 771, 828, 827, 842, 857, 715, 723, 668, 773, 751, 753, 754, 891, 758, 719, 714, 728, 755, 718, 800, 799, ; ETE museum list:
Metadata
Also known as:Small Reptile Quarry, ETE Locality 1580, NMMNH L-4208, Trilophosaurus Quarry 2
Database number:12942
Authorizer:J. Alroy, R. Butler, M. Carrano Enterer:R. Whatley, R. Butler, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2002-01-11 15:33:04 Last modified:2018-04-23 17:06:54
Access level:the public Released:2002-01-11 15:33:04
Creative Commons license:CC BY
Reference information

Primary reference:

37120. H. J. Sawin. 1944. Amphibians from the Dockum Triassic of Howard County, Texas. Contributions to Geology, The University of Texas 4401:361-399 [M. Carrano/M. Carrano]

Secondary references:

42905% 24260S. Chatterjee. 1986. Malerisaurus langstoni, a new diapsid reptile from the Triassic of Texas . Journal of Vertebrate Paleontology 6(4):297-312 [J. Alroy/R. Whatley/M. Uhen]
5936ETE 1717R. L. Elder. 1987. Taphonomy and paleoecology of the Dockum Group, Howard County, Texas. Journal of the Arizona-Nevada Academy of Science 22(1):85-94 [A. Behrensmeyer/A. Behrensmeyer/M. Carrano]
17273ETE A. B. Heckert. 2004. Late Triassic microvertebrates from the lower Chinle Group (Otischalkian-Adamanian: Carnian), southwestern U.S.A. New Mexico Museum of Natural History and Science Bulletin 27:1-170 [M. Carrano/M. Carrano]
24941ETE A. B. Heckert and S. G. Lucas. 2006. Micro- and small vertebrate biostratigraphy and biochronology of the Upper Triassic Chinle Group, southwestern USA. In J. D. Harris, S. G. Lucas, J. A. Spielmann, M. G. Lockley, A. R. C. Milner, J. I. Kirkland (eds.), The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:94-104 [M. Carrano/M. Carrano/P. Wagner]
32141 A. B. Heckert, S. G. Lucas, L. F. Rinehart, J. A. Spielmann, A. P. Hunt and R. Kahle. 2006. Revision of the archosauromorph reptile Trilophosaurus, with a description of the first skull of Trilophosaurus jacobsi, from the Upper Triassic Chinle Group, West Texas, USA. Palaeontology 49(3):621-640 [R. Butler/R. Butler]
19338ETE T. M. Lehman and S. Chatterjee. 2005. Depositional setting and vertebrate biostratigraphy of the Triassic Dockum Group of Texas. Journal of Earth Systems Science 114(3):325-351 [M. Carrano/M. Carrano]
14122ETE R. A. Long and P. A. Murry. 1995. Late Triassic (Carnian and Norian) tetrapods from the southwestern United States. New Mexico Museum of Natural History and Science Bulletin 4:1-254 [M. Carrano/M. Carrano/M. Carrano]
12932ETE P. A. Murry. 1989. Geology and paleontology of the Dockum Formation (Upper Triassic), west Texas and eastern New Mexico. In S. G. Lucas and A. P. Hunt (eds.), Dawn of the Age of Dinosaurs in the American Southwest, New Mexico Museum of Natural History, Albuquerque 102-144 [M. Carrano/M. Carrano/M. Carrano]
43417 J. A. Spielmann, S. G. Lucas, A. P. Hunt and A. B. Heckert. 2006. Reinterpretation of the holotype of Malerisaurus langstoni, a diapsid reptile from the Upper Triassic Chinle Group of New Mexico. In J. D. Harris, S. G. Lucas, J. A. Spielmann, M. G. Lockley, A. R. C. Milner, & J. I. Kirkland (eds.), The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:543-547 [R. Butler/R. Butler/M. Carrano]
43418 J. A. Spielmann, S. G. Lucas, L. F. Rinehart and A. B. Heckert. 2008. The Late Triassic archosauromorph Trilophosaurus. New Mexico Museum of Natural History and Science Bulletin 43:1-177 [R. Butler/R. Butler]