Snyder Quarry, NMMNH 3845-1 (Triassic to of the United States)

Where: Rio Arriba County, New Mexico (36.3° N, 106.5° W: paleocoordinates 12.5° N, 45.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Petrified Forest Member (Chinle Formation), Lacian to Lacian (221.5 - 205.6 Ma)

• early-mid Norian = Revueltian

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; pebbly, conglomeratic mudstone and wackestone

• a "mudstone-pebble conglomerate" and an overlying "sandstone-wacke"

Size classes: macrofossils, mesofossils

Collected by S. Fowler, M. Snyder, A. Heckert, K. Ziegler in 1995-2001; reposited in the NMMNH

Collection methods: bulk, quarrying, mechanical, sieve,

Primary reference: A. B. Heckert, K. E. Zeigler, S. G. Lucas, L. F. Rinehart, and J. D. Harris. 2000. Preliminary description of coelophysoids (Dinosauria: Theropoda) from the Upper Triassic (Revueltian: early-mid Norian) Snyder Quarry, north-central New Mexico. In S. G. Lucas and A. B. Heckert (eds.), Dinosaurs of New Mexico. New Mexico Museum of Natural History and Science Bulletin 17:27-32 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 62311: authorized by Matthew Carrano, entered by Matthew Carrano on 18.07.2006, edited by Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gnathostomata
  -
Chondrichthyes indet.1
Chondrichthyes indet.1 Huxley 1880 cartilaginous fish
NMMNH P-40435, 40345, 41819, 40350
Chondrichthyes
 Hybodontiformes - Lonchidiidae
Lonchidion humblei1
Lonchidion humblei1 Murry 1981 elasmobranch
 Xenacanthiformes - Xenacanthidae
"Xenacanthus moorei" = Triodus moorei7
"Xenacanthus moorei" = Triodus moorei7 Woodward 1889 elasmobranch
NMMNH P-33112, tooth
Gnathostomata
  -
Osteichthyes indet.7
Osteichthyes indet.7 bony fish
NMMNH P-40330, 43572, 40578, 31652
Actinopteri
 Semionotiformes - Semionotidae
Semionotidae indet.7
Semionotidae indet.7 Woodward 1890
NMMNH P-29043, incomplete partial skeleton
Osteichthyes
 Palaeonisciformes - Palaeoniscidae
aff. Turseodus sp.3
aff. Turseodus sp.3 Leidy 1857
Scales
 Palaeonisciformes - Redfieldiidae
Redfieldiidae indet.7
Redfieldiidae indet.7 Hutchinson 1973
NMMNH P-35968, 31655, 36065, 33113
Coelacanthimorpha
 Coelacanthiformes - Coelacanthidae
Coelacanthidae indet.7
Coelacanthidae indet.7 Agassiz 1843 coelacanth
NMMNH P-40322, 40323, 40273
Amphibia
 Temnospondyli -
Temnospondyli indet.1, ? Temnospondyli indet.1
Temnospondyli indet.1 tetrapod
NMMNH P-41824, tooth
? Temnospondyli indet.1 tetrapod
NMMNH P-40359, centrum
 Temnospondyli - Metoposauridae
"? Buettneria sp." = Anaschisma7
"? Buettneria sp." = Anaschisma7 Branson 1905 tetrapod
NMMNH P-29989, 29169, 33114, 31653, centra, chevron, teeth
Osteichthyes
 Therapsida - Tritylodontidae
? Tritylodontidae indet.
? Tritylodontidae indet. Cope 1884 cynodont
NMMNH P-29044, distal humerus
Reptilia
  -
Reptilia indet.1
Reptilia indet.1 Laurenti 1768 reptile
NMMNH P-33140, 35979, 36066, 40352, 40372, 40375, 40378
 Diapsida -
Archosauriformes indet.1
Archosauriformes indet.1 Gauthier 1986 archosauromorph
Teeth
 Theropoda -
Coelophysoidea indet.5
Coelophysoidea indet.5 Holtz 1994 coelophysoid
NMMNH P-29168, tibia-fibula and proximal tarsals
 Theropoda - Coelophysidae
cf. Coelophysis sp.5
cf. Coelophysis sp.5 Cope 1889 coelophysoid
NMMNH P-30852, skull. NMMNH P-29046, 29047, 31661, partial skeletons. NMMNH P-31293, tibia. NMMNH P-54617-54620, hindlimb elements
 Theropoda - Herrerasauridae
cf. Caseosaurus sp.5
cf. Caseosaurus sp.5 Hunt et al. 1998 herrerasaurid
NMMNH P-35995, ilium
 Lagerpetidae - Lagerpetidae
Dromomeron romeri2
Dromomeron romeri2 Irmis et al. 2007 ornithodiran
NMMNH P-35379, astragalocalcaneum
 Phytosauria - Parasuchidae
"? Phytosauridae indet." = Mystriosuchinae1, "Pseudopalatus buceros" = Machaeroprosopus buceros7
"? Phytosauridae indet." = Mystriosuchinae1 von Huene 1915 archosaur
NMMNH P-41836, tooth
"Pseudopalatus buceros" = Machaeroprosopus buceros7 Cope 1881 archosaur
11 skulls and several dozen associated or isolated postcranial elements. NMMNH P-31292, complete skull.
 Loricata - Rauisuchidae
Postosuchus sp.7
Postosuchus sp.7 Chatterjee 1985 rauisuchid
NMMNH P-36144, P-33131, femora
 Loricata -
? Sphenosuchia indet.1
? Sphenosuchia indet.1 crocodilian
NMMNH P-30772, scute
 Pseudosuchia - Stagonolepididae
? Stagonolepididae indet.1, Typothorax coccinarum7, "Desmatosuchus chamaensis n. sp." = Rioarribasuchus chamaensis
? Stagonolepididae indet.1 Lydekker 1887 aetosaur
NMMNH P-36067, tooth
Typothorax coccinarum7 Cope 1875 aetosaur
"Desmatosuchus chamaensis n. sp." = Rioarribasuchus chamaensis Zeigler et al. 2002 aetosaur
NMMNH P-32793 (holotype), paramedian plate. NMMNH P-29045, 31295, 32795, 32796, 32797, 33099, 33100 (paratypes), plates. NMMNH P-32794, 33101, 33820, 34887, 34891, 34892, 35201, 35349, 35436, 35459, 35806, 35807, 35991, 35993, 36052, 37300, 37348, 37349, 39184, 39520, 40395 (topotypes). NMMNH P-35206, 35991, 35357, plates
 Eosuchia -
Lepidosauria indet.7
Lepidosauria indet.7 lepidosaur
NMMNH P-35974, jaw fragment
Malacostraca
 Decapoda -
Rioarribia schrami n. gen. n. sp.6
Rioarribia schrami n. gen. n. sp.6 Rinehart et al. 2003 crab
NMMNH P-29041
Bivalvia
 Unionida - Hyriidae
Antediplodon terraerubrae4
Antediplodon terraerubrae4 clam
NMMNH P-31401-17
1Heckert and Jenkins 2005; 2Irmis et al. 2007; 3Jenkins and Heckert 2004; 4Lucas et al. 2003; 5Nesbitt et al. 2007; 6Rinehart et al. 2003; 7Ziegler et al. 2003