Otis Chalk Quarry 1, SMU 122, TMM 31025: Norian, Texas
collected by WPA 1939–1941

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Hybodontiformes
Hybodontoidea indet. Zangerl 1981
Heckert 2004 1 element
NMMNH P-34043
? Lissodus sp. Brough 1935
Murry 1986 1 specimen
SMU 69650, tooth
Osteichthyes
Osteichthyes indet. Huxley 1880
Heckert 2004 3 elements
NMMNH P-34037, 34044, 34220
Actinopterygii
Actinopterygii indet. Cope 1887
Heckert 2004 4 elements
NMMNH P-34023, 34040, 41426, 41427
Actinopteri - Palaeonisciformes - Palaeoniscidae
aff. Palaeoniscidae indet. Vogt 1852
Heckert 2004 1 element
NMMNH P-34046
aff. Turseodus sp. Leidy 1857
Heckert 2004 1 element
NMMNH P-34038
Actinopteri - Palaeonisciformes - Redfieldiidae
Redfieldiidae indet. Hutchinson 1973
Heckert 2004 6 elements
NMMNH P-34039, 41338, 40699, 40700, 41357
Arganodontidae
? Arganodus sp. Martin 1979
Heckert 2004
Coelacanthimorpha - Coelacanthiformes - Coelacanthidae
? Coelacanthidae indet. Agassiz 1843
Heckert 2004 1 element
NMMNH P-34045
unclassified
Tetrapoda indet. Jaekel 1911
Heckert 2004 16 specimens
NMMNH P-34052, 34053, 34063-65, 34068, 34071-72
Metoposauridae
Metoposauridae indet. Watson 1919
Heckert 2004 1 specimen
NMMNH P-34034
Buettneria howardensis Sawin 1944
Sawin 1944 3 specimens
synonym of Koskinonodon perfectus
TMM 31025-6, 8, 11
Almasauridae
Latiscopus disjunctus n. gen., n. sp. Wilson 1948
Wilson 1948 1 specimen
nomen dubium belonging to Almasauridae
UT-BEG 31025-182
Reptilia
Reptilia indet. Laurenti 1768
Heckert 2004 21 specimens
NMMNH P-34024-31, 34047-79, 34062, 34066, 34144-46, 34222, 34233, 41428-34
Archosauromorpha indet. (Huene 1946)
Heckert 2004 12 elements
NMMNH P-34020, 34050, 34054
Rhynchosauridae indet. Cope 1871
Elder 1987 4 specimens
TMM 31025-263 (holotype), 31025-262, humeri- TMM 31025-266, 31025-264, femora
    = Otischalkia elderae n. gen., n. sp. Hunt and Lucas 1991
Hunt and Lucas 1991
Trilophosaurus buettneri Case 1928
Anonymous 1940
Hundreds of specimens - see Spielmann et al. (2008, p. 153) for a complete list
    = Trilophosaurus sp. Case 1928
Anonymous 1940
Malerisaurus langstoni Chatterjee 1986
Murry 1989
synonym of Trilophosaurus buettneri
? Theropoda indet. Marsh 1881
Heckert 2004 11 specimens
NMMNH P-34011a-d, 34012, 34057-58, 41435-36, 41439, 34069
    = Archosauriformes indet. Gauthier 1986
Butler 2010
Archosauria indet. Cope 1869
Elder 1987 8 specimens
    = Archosauriformes indet. Gauthier 1986
Heckert 2004
NMMNH P-34013, 34015-19, 34022, 34143
aff. Ornithischia indet. Seeley 1888
Heckert 2004 1 specimen
NMMNH P-34032
    = Archosauriformes indet. Gauthier 1986
Butler 2010
Ornithischia indet. Seeley 1888
Heckert 2004 3 specimens
NMMNH P-41437, 34033, 41438
    = Archosauriformes indet. Gauthier 1986
Butler 2010
Desmatosuchus sp. Case 1920
3 specimens
    = Aetosaurus sp. Fraas 1887
Elder 1987
    = Doswellia kaltenbachi Weems 1980
Long and Murry 1995
TMM 31025-64, 152, 153
    = Doswellia sp. Weems 1980
Sues et al. 2013
Rauisuchidae indet. Huene 1942
Elder 1987 1 individual
TMM 31025-12 (holotype), right ilium. TMM 31025-177, 257, 259. All specimens probably represent a single individual
    = Lythrosuchus langstoni n. gen., n. sp. Long and Murry 1995
Long and Murry 1995
recombined as Poposaurus langstoni
? Rauisuchia indet. Huene 1942
Heckert 2004 1 specimen
invalid subgroup of Suchia
NMMNH P-34015
Phytosauria indet. (Jaeger 1828)
Long and Murry 1995 6 specimens
TMM 31025-7, 9, 149, 152, 153, 180
Reptilia - Parasuchidae
Phytosauridae indet. Jaeger 1828
Heckert 2004 4 specimens
replaced by Mystriosuchinae
NMMNH P-34005, 29400, 34007-09
Paleorhinus bransoni Williston 1904
Long and Murry 1995 1 specimen
recombined as Parasuchus bransoni
TMM 31025-172, skull
Reptilia
Protecovasaurus lucasi Heckert 2004
Heckert 2004 1 specimen
NMMNH P-34221
Reptilia - Prolacertiformes
Prolacertiformes indet. Camp 1945
Heckert 2004 1 specimen
NMMNH P-34056; also called "aff. Tanytrachelos"
see common names

Geography
Country:United States State/province:Texas County:Howard
Coordinates: 32.2° North, 101.2° West (view map)
Paleocoordinates:6.9° North, 41.5° West
Basis of coordinate:stated in text
Altitude:740 meters
Geographic resolution:small collection
Time
Period:Triassic Epoch:Late/Upper Triassic
Stage:Norian 10 m.y. bin:Triassic 4
*International age/stage:Olenekian - Rhaetian
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: variously referred to the Iatan or Colorado City of the Dockum Group; low in formation; lower level than Quarry 1
Lithology and environment
Primary lithology:concretionary,green,red,yellow,blue mudstone
Secondary lithology:paleosol/pedogenic calcareous mudstone
Includes fossils?Y
Lithology description: "red, green, purple and yellowish smectitic mudstones with minor concretions encrusting many of the bones"
Environment:crevasse splay
Geology comments: "an overbank or crevasse splay deposit...[in] a floodplain environment that experienced moderate pedogenic modification"
Taphonomy
Modes of preservation:body
Lagerst�tten type:concentrate
Degree of concentration:-single event
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:good
Disassociated major elements:many
Disassociated minor elements:many
Fragmentation:occasional
Temporal resolution:snapshot
Collection methods and comments
Collection methods:bulk,selective quarrying,surface (float),surface (in situ),mechanical,sieve,field collection
Reason for describing collection:taphonomic analysis
Museum repositories:NMMNH,TMM
Collectors:WPA Collection dates:1939–1941
Taxonomic list comments:1940 report: "To date the fauna has resisted all efforts at Identification, and beyond the statement that probably all the fauna is at least rare or mostly undescribed, nothing can be said."
Metadata
Also known as:Trilophosaurus Quarry 1, NMMNH L-860, WPA, Work Project No. 13352
Database number:22704
Authorizer:A. Behrensmeyer, R. Butler, M. Carrano Enterer:A. Behrensmeyer, R. Butler, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2001-05-29 01:00:00 Last modified:2020-01-13 13:38:47
Access level:the public Released:2001-05-29 01:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

71451. Anonymous. 1939. The third quarterly report covering the quarter ending December 31,1939 for the state-wide paleontologic-mineralogic survey in Texas. A Federal Works Agency Work Projects Administration Project. O.P. No. 665-66-3-233. State Serial No. 300-88 1-47 [M. Carrano/M. Carrano]

Secondary references:

71466 Anonymous. 1940. The seventh quarterly report covering the quarter ending December 31, 1940 for the state-wide paleontologic-mineralogic survey in Texas. A Federal Works Agency Work Projects Administration Project. O.P. No. 665-66-3-233. State Serial No. 300-88 1-44 [M. Carrano/M. Carrano]
71453 Anonymous. 1940. The fourth quarterly report covering the quarter ending March 31, 1940 for the state-wide paleontologic-mineralogic survey in Texas. A Federal Works Agency Work Projects Administration Project. O.P. No. 665-66-3-233. State Serial No. 300-88 1-29 [M. Carrano/M. Carrano]
71463 Anonymous. 1940. The fifth quarterly report covering the quarter ending June 30, 1940 for the state-wide paleontologic-mineralogic survey in Texas. A Federal Works Agency Work Projects Administration Project. O.P. No. 665-66-3-233. State Serial No. 300-88 1-25 [M. Carrano/M. Carrano]
71464 Anonymous. 1940. The sixth quarterly report covering the quarter ending September 30, 1940 for the state-wide paleontologic-mineralogic survey in Texas. A Federal Works Agency Work Projects Administration Project. O.P. No. 665-66-3-233. State Serial No. 300-88 1-44 [M. Carrano/M. Carrano]
71467 Anonymous. 1941. The eighth quarterly report covering the quarter ending March 31, 1941 for the state-wide paleontologic-mineralogic survey in Texas. A Federal Works Agency Work Projects Administration Project. O.P. No. 665-66-3-233. State Serial No. 300-88 1-47 [M. Carrano/M. Carrano]
32144 R. J. Butler. 2010. Taxonomic opinions on Archosauromorpha. [R. Butler/R. Butler/R. Butler]
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]
35714 A. P. Hunt and S. G. Lucas. 1991. A new rhynchosaur from the Upper Triassic of West Texas, and the biochronology of Late Triassic rhynchosaurs. Palaeontology 34(4):927-938 [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]
13249ETE P. A. Murry. 1986. Vertebrate paleontology of the Dockum Group, western Texas and eastern New Mexico. In K. Padian (ed.), The Beginning of the Age of Dinosaurs: Faunal Change Across the Triassic–Jurassic Boundary. Cambridge University Press, Cambridge 109-137 [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]
58720 P. A. Murry and R. A. Long. 1997. Dockum Group. In P. J. Currie & K. Padian (ed.), Encyclopedia of Dinosaurs 191-193 [M. Carrano/M. Carrano]
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]
71494 E. H. Sellards. 1941. Final report covering the period from March 4, 1939 ro September 30, 1941 for the state-wide paleontologic-mineralogic survey in Texas. A Federal Works Agency Work Projects Administration Project iii-85 [M. Carrano/M. Carrano]
47029 H.-D. Sues, J. B. Desojo, and M. D. Ezcurra. 2013. Doswelliidae: a clade of unusual armoured archosauriforms from the Middle and Late Triassic. In S. J. Nesbitt, J. B. Desojo, R. B. Irmis (eds.), Anatomy, Phylogeny and Palaeobiology of Early Archosaurs and their Kin. Geological Society, London, Special Publications 379 [R. Butler/R. Butler]
43403 J. A. Wilson. 1948. A small amphibian from the Triassic of Howard County, Texas. Journal of Paleontology 22(3):359-361 [R. Butler/R. Butler]