Shark Tooth Hill, NMMNH Loc. 487 (Triassic of the United States)

Also known as NMMNH L-487, SMU Loc. #133, SMU Loc. #134

Where: Quay County, New Mexico (35.0° N, 103.3° W: paleocoordinates 9.9° N, 43.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Duke Ranch Member (Redonda Formation), Norian (228.0 - 208.5 Ma)

• upper part of formation, Apachean. Two levels.

• group of beds-level stratigraphic resolution

Environment/lithology: "floodplain"; ooidal conglomerate and lenticular, red siltstone

• "a subaqueous flow or beach deposit", with one locality probably an overbank/crevasse splay, and another a pond.
• "a 40-50-cm-thick, matrix-supported conglomerate" with oolites; also a "red lenticular siltstone"

Size classes: mesofossils, microfossils

Collected by P. Murry, A. Hunt, S. Lucas in 1947, 1981, 1986-1987; reposited in the NMMNH, YPM

Collection methods: bulk, sieve,

Primary reference: J. T. Gregory. 1972. Vertebrate faunas of the Dockum Group, Triassic, eastern New Mexico and west Texas. In V. C. Kelly & F. D. Trauger (ed.), New Mexico Geological Society, 23rd Field Conference, East Central New Mexico. New Mexico Geological Society Guidebook 23:120-123 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 83737: authorized by Matthew Carrano, entered by Matthew Carrano on 28.08.2008, edited by Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Ostracoda
 Podocopida - Darwinulidae
Darwinula sp.1 Brady and Robertson 1885 ostracod
Sedentaria
 Sabellida - Serpulidae
"Spirorbis" sp.1 Daudin 1800
Gnathostomata
  -
Osteichthyes indet.5 bony fish
NMMNH P-41850-41854, 41861, 41897
Reptilia
  -
Reptilia indet.5 Laurenti 1768 reptile
NMMNH P-17086, 17087, 17097, 17101, 17111, 41862, 41863-41875
Reptilia indet.4 Laurenti 1768 reptile
NMMNH P-41898, 41849, 41899
 Archosauria -
Archosauria indet.5 Cope 1869 archosaur
NMMNH P-41877-41882, 41884-41886
Archosauria indet.4 Cope 1869 archosaur
Archosauria indet.4 Cope 1869 archosaur
NMMNH P-41887, tooth
Archosauria indet.4 Cope 1869 archosaur
NMMNH P-41888, partial tooth
 Pseudosuchia - Stagonolepididae
Redondasuchus sp.4 Hunt and Lucas 1991 aetosaur
YPM 4256, paramedian plate. NMMNH 17091, plate fragments
 Phytosauria - Parasuchidae
Redondasaurus gregorii n. gen. n. sp.2, "Phytosauridae indet." = Mystriosuchinae1
Redondasaurus gregorii n. gen. n. sp.2 Hunt and Lucas 1993 archosaur
YPM 3294, skull
"Phytosauridae indet." = Mystriosuchinae1 von Huene 1915 archosaur
Amphibia
 Temnospondyli - Metoposauridae
Metoposauridae indet.4 Watson 1919 tetrapod
NMMNH P-41876, 41860
Metoposauridae indet.4 Watson 1919 tetrapod
NMMNH P-17099
Gnathostomata
  -
Actinopterygii indet.5 ray-finned fish
NMMNH P-41855, 41856, 17090
Actinopteri
 Semionotiformes - Semionotidae
Semionotidae indet.5 Woodward 1890
NMMNH P-41857, 41894-41896
 Neopterygii -
Osteichthyes
 Palaeonisciformes - Redfieldiidae
Redfieldiidae indet.3 Hutchinson 1973
NMMNH P-41858, 41859, 41893
cf. Lasalichthys sp.3 Schaeffer 1967