TMM 45947, Adobe Wells Draw (Cretaceous of the United States)

Also known as Lowerverse local fauna microfossil site; Lowerverse locality

Where: Brewster County, Texas (29.3° N, 103.6° W: paleocoordinates 35.9° N, 77.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Lower Shale Member (Aguja Formation), Early/Lower Campanian (83.5 - 70.6 Ma)

• middle part of the lower shale member; ammonites in the uppermost part of the underlying upper Pen Formation pertain to the Scaphites hippocrepis III zone (c. 82 Ma) while those in the overlying Rattlesnake Mountain sandstone member of the Aguja pertain to the Baculites maclearni zone (c. 80 Ma)

• bed-level stratigraphic resolution

Environment/lithology: estuary or bay; sandstone

• tidal creek and estuarine environments; intermittent deposition in shallow brackish water environs
• "dark lignitic clayshale intervals with discontinuous whitish sandstone"

Size classes: macrofossils, mesofossils

Collection methods: sieve,

• Wick, 2021: The material was then water screened through (stacked) 6 mm and 0.8 mm screens...specimens and locality data are housed at the Vertebrate Paleontology Laboratory at the Jackson School Museum of Earth History (TMM), University of Texas

Primary reference: T. M. Lehman, S. L. Wick, A. B. Brink and T. A. Shiller, II. 2019. Stratigraphy and vertebrate fauna of the lower shale member of the Aguja Formation (lower Campanian) in West Texas. Cretaceous Research 99:291-314 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 200385: authorized by Patricia Holroyd, entered by Patricia Holroyd on 01.04.2019, edited by Philip Mannion and Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Hadrosauridae
Hadrosauridae indet. hadrosaurid
unnamed new genus and species; skull roof and braincase, TMM 45947-489; part of neurocranium, TMM 45947- 488; fragmentary frontal and postorbital, TMM 45947-490; proximal end of pubis, TMM 45947- 493; proximal end of scapula, TMM 45947-492; femur, TMM 45947-491; teeth, 45947-499, 45947-500
 Theropoda - Ornithomimidae
Ornithomimidae indet. Marsh 1890 ornithomimid
unnamed new genus and species; part of right MT IV, TMM 45947-494; pedal phalanges, TMM 45947-495
 Theropoda - Tyrannosauridae
Tyrannosauridae indet. Osborn 1906 tyrannosaurid
fragmentary right frontal; TMM 45947-487; caudal vertebra, TMM 45947-496
 Loricata - Goniopholididae
Goniopholididae indet. Cope 1875 crocodilian
TMM 45947-498 (partial sacrum); unnamed new genus and species
 Squamata -
Squamata "indet. 1"3 Oppel 1811 squamates
TMM 45947-550
Squamata "indet. 2"3 Oppel 1811 squamates
TMM 45947-551
Squamata "indet. 3"3 Oppel 1811 squamates
TMM 45947-552
 Squamata - Xantusiidae
Catactegenys solaster3 Nydam et al. 2013 night lizard
TMM 45947-506, -507, -508, -509, -510
 Squamata - Paramacellodidae
Hypostylos lehmani n. gen. n. sp.3
Hypostylos lehmani n. gen. n. sp.3 Wick and Shiller 2020 squamates
TMM 45947-502 - type; referred material: TMM 45947-501, -503, -504, -505, -541, -567
 Squamata -
aff. Coniophis sp.3 Marsh 1892 snake
TMM 45947-553, -554, -555, -556, -557, -558, -559, -560, -561, -562
Scincomorpha indet.3 Camp 1923 squamates
TMM 45947- 542, -543
cf. Bothriagenys sp.3 Nydam 2002 squamates
TMM 45947-519
Bothriagenys flectomendax n. sp.3 Wick and Shiller 2020 squamates
TMM 45947-517 - type; referred material: TMM 45947-515, -516, -518
Bothriagenys mysterion3 Nydam 2002 squamates
TMM 45947- 511, -512, -513, -514
Borioteiioidea indet.3 Nydam et al. 2007 squamates
TMM 45947-526, -527, -528, -529, -530
Hydrargysaurus gladius n. gen. n. sp.3 Wick and Shiller 2020 squamates
TMM 45947-533 - type; referred material: TMM 45947-534, -535, -536
 Squamata - Chamopsiidae
cf. Chamopsiidae "indet. 1"3 Denton and O'Neill 1995 squamates
TMM 45947-524
cf. Chamopsiidae "indet. 2"3 Denton and O'Neill 1995 squamates
TMM 45847-525, -563
aff. Chamopsiidae indet.3 Denton and O'Neill 1995 squamates
TMM 45947-531, -532
cf. Socognathus sp.3 Gao and Fox 1991 squamates
TMM 45947-520, -521, -523, -537, -538, -539
aff. Socognathus sp.3 Gao and Fox 1991 squamates
TMM 49547-522
 Squamata -
cf. Apsgnathus triptodon3 Nydam et al. 2013 squamates
TMM 45947-540
 Squamata - Xenosauridae
? Xenosauridae indet.3 Cope 1866 squamates
TMM 45947-564, -565, -566
 Squamata -
Varanoidea indet.3 Gray 1827 squamates
TMM 45947-544, -545, -546, -547, -548, -549
Amphibia
 Salientia -
Anura indet.1 Fischer von Waldheim 1813 frog
TMM 45947
 Temnospondyli - Albanerpetontidae
Albanerpeton sp.2 Estes and Hoffstetter 1976 tetrapod
TMM 45947-623 (fragmentary left maxilla); TMM 45947-624 (fragmentary right maxilla); TMM 45947-625 (fragmentary right maxilla); TMM 45947-627 (fragmentary left dentary); TMM 45947-632, (fragmentary atlantal centrum); TMM 45947-633 (axis); TMM 45947-634 (articular); TMM 45947-635 (fragmentary ?right parietal); TMM 45947-637 (fragmentary right frontal)
Albanerpeton cf. galaktion2 Fox and Naylor 1982 tetrapod
TMM45947-629 (fragmentary left premaxilla); TMM45947-631 (fragmentary right premaxilla)
"Albanerpeton nexuosum" = Albanerpeton nexuosus2 Estes 1981 tetrapod
TMM 45947-626 (fragmentary left dentary); TMM45947- 628 (middle portion of right maxilla); TMM 45947-630 (fragmentary left premaxilla); TMM 45947-636 (fragmentary left frontal)