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

Also known as ETE Locality 1581, Trilophosaurus Quarry 3

Where: Howard County, Texas (32.2° N, 101.2° W: paleocoordinates 6.9° N, 41.5° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Colorado City Formation (Dockum Group), Norian (228.0 - 208.5 Ma)

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

• 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

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: 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]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 and Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Palaeonisciformes - Palaeoniscidae
? Turseodus sp.3 Leidy 1857
Osteichthyes
 Temnospondyli - Metoposauridae
"Buettneria howardensis n. sp." = Koskinonodon perfectus
"Buettneria howardensis n. sp." = Koskinonodon perfectus Case 1922 tetrapod
TMM 31100-30, 42 (paratypes). TMM 31100-13, 19, 21, 27, 31, 34, 35, 36, 37, 40, 41, 43, 47, 90, 91, 92, 99, 123, 124, 160, 173, 174, 178, 237, 295, 297, 416, 417, 420, 431, 433A, 433B, 455
Reptilia
 Eosuchia -
Trilophosaurus buettneri8 Case 1928 archosauromorph
 Archosauria -
 Dinosauromorpha - Lagerpetonidae
Dromomeron gregorii n. sp.4 Nesbitt et al. 2009 ornithodiran
TMM 31100-1306, 464, 1308, 1234, 764, 278, 1314
 Saurischia -
Chindesaurus bryansmalli2 Long and Murry 1995 theropod
 Dinosauromorpha - Silesauridae
Silesauridae indet.5 Langer et al. 2010 ornithodiran
 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
Lucasuchus hunti n. gen. n. sp.2, "Typothorax meadei" = Longosuchus meadei7, Coahomasuchus kahleorum6
Lucasuchus hunti n. gen. n. sp.2 Long and Murry 1995 archosaur
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
"Typothorax meadei" = Longosuchus meadei7 Sawin 1947 archosaur
TMM 31100-234, 236, 294, 312, 435, 515-518, 520, 522, 525, 530
Coahomasuchus kahleorum6 Heckert and Lucas 1999 archosaur
TMM 31100-437, partial skull, paramedian, lateral, and ventral osteoderms, vertebrae, limb, and girdle material
 Loricata - Rauisuchidae
Postosuchus kirkpatricki2 Chatterjee 1985 rauisuchid
TMM 31100-508, 513, 514
 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
 Phytosauria -
Phytosauria indet.2 Jaeger 1828 archosaur
See Long & Murry (1995, p. 226) for full list of specimens
 Phytosauria - Parasuchidae
"Angistorhinus megalodon" = Brachysuchus megalodon2, "Paleorhinus bransoni" = Parasuchus bransoni2
"Angistorhinus megalodon" = Brachysuchus megalodon2 Case 1929 archosaur
TMM 31100-11, 12, 126, 164, 167, 209, 293, 298. ROM 7977 (was TMM 31100-238)
"Paleorhinus bransoni" = Parasuchus bransoni2 Williston 1904 archosaur
TMM 31100-8, 101, 175, 418, 419, 453
 Eosuchia -
Triopticus primus n. gen. n. sp.9
Triopticus primus n. gen. n. sp.9 Stocker et al. 2016 archosauromorph
TMM 31100-1030, posterior portion of a skull