Otis Chalk Quarry 3, TMM 31100 (Triassic to of the United States)

Also known as ETE Locality 1581, Trilophosaurus Quarry 3, WPA, Work Project No.13352

Where: Howard County, Texas (32.2° N, 101.2° W: paleocoordinates 4.9° N, 40.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Colorado City Formation (Dockum Group), Carnian to Carnian (237.0 - 208.5 Ma)

• ‘Pre-Tecovas Horizon’, Colorado City Formation, Dockum Group; latest Carnian–early Norian (To et al. 2022)

•variously referred to the Iatan or Colorado City of the Dockum Group; low in formation

•about 40 ft below site 1

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; mudstone

• ETE sed env 1: fluvial, ETE sed env 2: floodplain ETE event: flood, ETE env comment: crev splay
• ETE rock type adj: 0, ETE lithology comments: 0

Size class: macrofossils

Collected by WPA in 1939–1941; reposited in the TMM

• ETE Size: .; ETE reference list: 820, 813, 676, 889, 890, 839, 785, 858, 780, 817, 778, 854, 803, 777, 808, 814, 774, 823, 822, 789, 855, 838, 784, 671, 670, 787, 788, 790, 821, 877, 818, 674, 782, 734, ; ETE museum list:

Primary reference: 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]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 22706: authorized by Anna Behrensmeyer, entered by Anna Behrensmeyer on 29.05.2001, edited by Richard Butler, Matthew Carrano, Philip Mannion and Bryan Gee

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Diapsida -
Trilophosaurus buettneri10 Case 1928 archosauromorph
 Archosauria -
 Theropoda -
Theropoda indet.3 Marsh 1881 theropod
 Dinosauromorpha - Silesauridae
Silesauridae indet.6 Langer et al. 2010 ornithodiran
 Lagerpetidae - Lagerpetidae
Dromomeron gregorii n. sp.5 Nesbitt et al. 2009 ornithodiran
TMM 31100-1306, 464, 1308, 1234, 764, 278, 1314
 Pseudosuchia -
"Lythrosuchus langstoni" = Poposaurus langstoni2, Poposaurus gracilis2
"Lythrosuchus langstoni" = Poposaurus langstoni2 Long and Murry 1995 archosaur
TMM 31100-510, 511
Poposaurus gracilis2 Mehl 1915 archosaur
TMM 31100-126, 378
 Loricata - Rauisuchidae
Postosuchus kirkpatricki2 Chatterjee 1985 rauisuchid
TMM 31100-508, 513, 514
 Loricata -
Crocodylomorpha indet.12 Hay 1930 crocodilian
TMM 31100-1494
 Pseudosuchia - Shuvosauridae
"Chatterjeea elegans" = Shuvosaurus inexpectatus2
"Chatterjeea elegans" = Shuvosaurus inexpectatus2 Chatterjee 1993 archosaur
TMM 31100-210, 353, 408, 414, 495, 496, 497, 509, 512
 Pseudosuchia - Stagonolepididae
Coahomasuchus kahleorum7, "Typothorax meadei" = Longosuchus meadei9, Lucasuchus hunti n. gen. n. sp.2
Coahomasuchus kahleorum7 Heckert and Lucas 1999 aetosaur
TMM 31100-437, partial skull, paramedian, lateral, and ventral osteoderms, vertebrae, limb, and girdle material
"Typothorax meadei" = Longosuchus meadei9 Sawin 1947 aetosaur
Lucasuchus hunti n. gen. n. sp.2 Long and Murry 1995 aetosaur
TMM 31100-257 (holotype), 31100-1, 2, 7, 109, 150, 267, 300, 312, 313, 340, 361, 468, 469, 471-477, 479-487, 489, 490, 492, 498-507, 528
 Phytosauria -
Phytosauria indet. Jaeger 1828 archosaur
See Long & Murry (1995, p. 226) for full list of specimens
 Phytosauria - Parasuchidae
"Paleorhinus bransoni" = Parasuchus bransoni2, "Angistorhinus megalodon" = Brachysuchus megalodon2
"Paleorhinus bransoni" = Parasuchus bransoni2 Williston 1904 archosaur
"Angistorhinus megalodon" = Brachysuchus megalodon2 Case 1929 archosaur
 Diapsida -
Triopticus primus n. gen. n. sp.11
Triopticus primus n. gen. n. sp.11 Stocker et al. 2016 archosauromorph
TMM 31100-1030, posterior portion of a skull
Amphibia
 Temnospondyli - Metoposauridae
"Buettneria howardensis n. sp." = Anaschisma browni8
"Buettneria howardensis n. sp." = Anaschisma browni8 Branson 1905 tetrapod
Osteichthyes
 Palaeonisciformes - Palaeoniscidae
? Turseodus sp.4 Leidy 1857