Coyote Amphitheater, NMMNH L-911 (Triassic of the United States)

Where: Rio Arriba County, New Mexico (36.2° N, 106.6° W: paleocoordinates 11.4° N, 45.5° W)

• coordinate stated in text

• local area-level geographic resolution

When: Mesa Montosa Member (Petrified Forest Formation), Norian (228.0 - 208.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; brown, calcareous siltstone and intraclastic, brown conglomerate

• "Siltstone and conglomerate: siltstone is moderate brown (5 YR 4/4), very calcareous and ripple laminar; conglomerate is brownish gray (5 Y$ 4/1) with clasts of mudstone and siltstone up to 1 cm in diameter..."

Size class: macrofossils

Reposited in the NMMNH

Primary reference: S. G. Lucas, K. E. Ziegler, A. B. Heckert and A. P. Hunt. 2003. Upper Triassic stratigraphy and biostratigraphy, Chama Basin, north-central New Mexico. In K. E. Ziegler, A. B. Heckert, & S. G. Lucas (eds.), Paleontology and Geology of the Upper Triassic (Revueltian) Snyder Quarry, New Mexico. New Mexico Museum of Natural History and Science Bulletin 24:15-39 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80926: authorized by Matthew Carrano, entered by Matthew Carrano on 21.05.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Amphibia
 Temnospondyli - Metoposauridae
"cf. Buettneria sp." = Anaschisma2
"cf. Buettneria sp." = Anaschisma2 Branson 1905 tetrapod
NMMNH P-44861, 44810, 44809, 44807
Reptilia
 Diapsida - Doswelliidae
Vancleavea sp.2
Vancleavea sp.2 Long and Murry 1995 archosauromorph
vertebra
 Theropoda -
Theropoda indet.2
Theropoda indet.2 Marsh 1881 theropod
NMMNH P-44804, limb fragment
 Pterosauria -
? Pterosauria indet.2
? Pterosauria indet.2 Kaup 1834 pterosaur
vertebra
 Phytosauria - Parasuchidae
Parasuchidae indet.2, "Pseudopalatus buceros" = Machaeroprosopus buceros2
Parasuchidae indet.2 Lydekker 1885 archosaur
NMMNH P-44808, osteoderms
"Pseudopalatus buceros" = Machaeroprosopus buceros2 Cope 1881 archosaur
 Pseudosuchia - Stagonolepididae
Paratypothorax sp.2, Typothorax coccinarum1
Paratypothorax sp.2 Long and Ballew 1985 aetosaur
NMMNH P-44811, scutes
Typothorax coccinarum1 Cope 1875 aetosaur
 Testudines -
? Testudines indet.2
? Testudines indet.2 turtle
NMMNH P- 44806
Bivalvia
 Unionida - Unionidae
Unionidae indet.2
Unionidae indet.2 Rafinesque 1820 freshwater mussel
1Heckert et al. 2005; 2Zeigler et al. 2005