PBDB Collection

Snyder Quarry, NMMNH 3845-1: Lacian - Sevatian, New Mexico
collected by S. Fowler, M. Snyder, A. Heckert, K. Ziegler 1995-2001

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Malacostraca - Decapoda

	Rioarribia schrami n. gen., n. sp. Rinehart et al. 2003	Rinehart et al. 2003	1 specimen
	NMMNH P-29041
Bivalvia - Unionida - Hyriidae

	Antediplodon terraerubrae	Lucas et al. 2003	18 specimens
	NMMNH P-31401-17
Osteichthyes

	Osteichthyes indet. Huxley 1880	Ziegler et al. 2003
	NMMNH P-40330, 43572, 40578, 31652
Coelacanthimorpha - Coelacanthiformes - Coelacanthidae

	Coelacanthidae indet. Agassiz 1843	Ziegler et al. 2003	3 specimens
	NMMNH P-40322, 40323, 40273
Tritylodontidae

	? Tritylodontidae indet. Cope 1884		1 specimen
	NMMNH P-29044, distal humerus
Reptilia

	Reptilia indet. Laurenti 1768	Heckert and Jenkins 2005
	NMMNH P-33140, 35979, 36066, 40352, 40372, 40375, 40378

	Archosauriformes indet. Gauthier 1986	Heckert and Jenkins 2005
	Teeth
Reptilia - Parasuchidae

	? Phytosauridae indet. Jaeger 1828	Heckert and Jenkins 2005
	replaced by Mystriosuchinae
	NMMNH P-41836, tooth

	Pseudopalatus buceros (Cope 1881)	Ziegler et al. 2003	11 individuals
	recombined as Machaeroprosopus buceros
	11 skulls and several dozen associated or isolated postcranial elements. NMMNH P-31292, complete skull.
Reptilia

	Postosuchus sp. Chatterjee 1985	Ziegler et al. 2003	2 specimens
	NMMNH P-36144, P-33131, femora

	Sphenosuchia indet. ()	Ziegler et al. 2003	1 specimen
	NMMNH P-30772, scute
	= ? Sphenosuchia indet.	Heckert and Jenkins 2005
	invalid subgroup of Crocodylomorpha

	Procolophonidae indet. Lydekker 1889	Ziegler et al. 2003	1 specimen
	NMMNH P-36067, tooth
	= ? Stagonolepididae indet. Lydekker 1887	Heckert and Jenkins 2005

	Desmatosuchus chamaensis n. sp. Zeigler et al. 2002		32 specimens
	recombined as Rioarribasuchus chamaensis
	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

	Typothorax coccinarum Cope 1875	Ziegler et al. 2003

	Ceratosauria indet. (Marsh 1884)		1 individual
	NMMNH P-29168, tibia-fibula and proximal tarsals
	= Coelophysoidea indet. Holtz 1994	Nesbitt et al. 2007
Reptilia - Coelophysidae

	Eucoelophysis sp. Sullivan and Lucas 1999		9 specimens
	NMMNH P-30852, skull. NMMNH P-29046, 29047, 31661, partial skeletons. NMMNH P-31293, tibia. NMMNH P-54617-54620, hindlimb elements (1 measurement)
	= Coelophysidae indet. Paul 1988	Heckert et al. 2005
	= Coelophysis bauri Cope 1887	Spielmann et al. 2007
	= cf. Coelophysis sp. Cope 1889	Nesbitt et al. 2007
	"Coelophysoid close to Coelophysis"
Reptilia - Herrerasauridae

	cf. Caseosaurus sp. Hunt et al. 1998	Nesbitt et al. 2007	1 specimen
	NMMNH P-35995, ilium
Reptilia

	Dromomeron romeri Irmis et al. 2007	Irmis et al. 2007	1 specimen
	NMMNH P-35379, astragalocalcaneum

	Lepidosauria indet. (Haeckel 1866)	Ziegler et al. 2003	1 specimen
	NMMNH P-35974, jaw fragment
Amphibia - Temnospondyli

	Temnospondyli indet. von Zittel 1887	Heckert and Jenkins 2005	1 specimen
	NMMNH P-41824, tooth

	? Temnospondyli indet. von Zittel 1887	Heckert and Jenkins 2005	1 specimen
	NMMNH P-40359, centrum
Amphibia - Temnospondyli - Metoposauridae

	? Buettneria sp. Case 1922	Ziegler et al. 2003	4 specimens
	synonym of Anaschisma
	NMMNH P-29989, 29169, 33114, 31653, centra, chevron, teeth
Actinopteri - Semionotiformes - Semionotidae

	Semionotidae indet. Woodward 1890	Ziegler et al. 2003	1 individual
	NMMNH P-29043, incomplete partial skeleton
Palaeonisciformes - Palaeoniscidae

	aff. Turseodus sp. Leidy 1857	Jenkins and Heckert 2004
	Scales
Palaeonisciformes - Redfieldiidae

	Redfieldiidae indet. Hutchinson 1973	Ziegler et al. 2003	4 specimens
	NMMNH P-35968, 31655, 36065, 33113
Chondrichthyes

	Chondrichthyes indet. Huxley 1880	Heckert and Jenkins 2005	4 specimens
	NMMNH P-40435, 40345, 41819, 40350
Chondrichthyes - Xenacanthiformes - Xenacanthidae

	Xenacanthus moorei (Woodward 1889)	Ziegler et al. 2003	1 specimen
	recombined as Triodus moorei
	NMMNH P-33112, tooth
Chondrichthyes - Hybodontiformes - Lonchidiidae

	Lonchidion sp. Estes 1964	Jenkins and Heckert 2004	1 specimen
	= Lonchidion humblei Murry 1981	Heckert and Jenkins 2005
	NMMNH P-41820, tooth
see common names

Geography

Country:	United States	State/province:	New Mexico	County:	Rio Arriba
Coordinates:	36.3° North, 106.5° West (view map)
Paleocoordinates:	12.5° North, 45.6° West
Basis of coordinate:	based on nearby landmark
Geographic resolution:	small collection

Time

Period:	Triassic	Epoch:	Late/Upper Triassic
Stage:	Norian	10 m.y. bin:	Triassic 4
Key time interval:	Lacian - Sevatian
Age range of interval:	227.00000 - 208.50000 m.y. ago

Stratigraphy

Formation:	Chinle	Member:	Petrified Forest
Local section:	Chinle-NMex	Local bed:	15 m
Local order:	bottom to top
Stratigraphic resolution:	bed
Stratigraphy comments: early-mid Norian = Revueltian

Lithology and environment

Primary lithology:	pebbly conglomeratic mudstone
Secondary lithology:	wackestone
Includes fossils?	Y
Includes fossils?	Y
Lithology description: a "mudstone-pebble conglomerate" and an overlying "sandstone-wacke"
Environment:	crevasse splay

Taphonomy

Modes of preservation:	body
Degree of concentration:	-bonebed
Size of fossils:	macrofossils,mesofossils
Spatial orientation:	preferred
Preservation of anatomical detail:	good
Abundance in sediment:	common
Articulated whole bodies:	none
Associated major elements:	many
Disassociated major elements:	some
Disassociated minor elements:	some
Fragmentation:	occasional
Feeding/predation traces:	tooth marks
Temporal resolution:	snapshot
Spatial resolution:	parautochthonous

Collection methods and comments

Collection methods:	bulk,selective quarrying,mechanical,sieve,field collection
Reason for describing collection:	taxonomic analysis
Museum repositories:	NMMNH
Collectors:	S. Fowler, M. Snyder, A. Heckert, K. Ziegler	Collection dates:	1995-2001

Metadata

Database number:	62311
Authorizer:	M. Carrano, R. Butler	Enterer:	M. Carrano, R. Butler
Modifier:	G. Varnham	Research group:	vertebrate
Created:	2006-07-18 06:02:51	Last modified:	2022-02-09 03:54:36
Access level:	the public	Released:	2006-07-18 06:02:51
Creative Commons license:	CC BY

Reference information

Primary reference:

18008.

ETE

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]

Secondary references:

31993		A. B. Heckert and H. S. Jenkins. 2005. The microvertebrate fauna of the Upper Triassic (Revueltian) Snyder Quarry, north-central New Mexico. In S. G. Lucas, K. E. Zeigler, V. W. Lueth, & D. E. Owen (eds.), New Mexico Geological Society, 56th Field Conference Guidebook, Geology of the Chama Basin 56:319-334 [R. Butler/R. Butler/M. Carrano]
78473		A. B. Heckert, S. G. Lucas, R. M. Sullivan and A. P. Hunt. 2005. New Mexico’s Triassic dinosaur district. In S. G. Lucas, K. E. Zeigler, V. W. Lueth, & D. E. Owen (eds.), New Mexico Geological Society, 56th Field Conference, Geology of the Chama Basin 56:34-36 [M. Carrano/M. Carrano]
31961		A. B. Heckert, S. G. Lucas, R. M. Sullivan, A. P. Hunt, and J. A. Spielmann. 2005. The vertebrate fauna of the Upper Triassic (Revueltian: early-mid Norian) Painted Desert Member (Petrified Forest Formation: Chinle Group) in the Chama Basin, northern New Mexico. In S. G. Lucas, K. E. Ziegler, V. W. Lueth, & D. E. Owen (eds.), New Mexico Geological Society, 56th Field Conference Guidebook, Geology of the Chama Basin 56:302-318 [R. Butler/R. Butler/M. Carrano]
24941	ETE	A. B. Heckert and S. G. Lucas. 2006. Micro- and small vertebrate biostratigraphy and biochronology of the Upper Triassic Chinle Group, southwestern USA. In J. D. Harris, S. G. Lucas, J. A. Spielmann, M. G. Lockley, A. R. C. Milner, J. I. Kirkland (eds.), The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:94-104 [M. Carrano/M. Carrano/P. Wagner]
31990		A. B. Heckert, K. E. Zeigler, and S. G. Lucas. 2003. Aetosaurs (Archosauria: Stagonolepididae) from the Upper Triassic (Revueltian) Snyder Quarry, New Mexico. In K. E. Zeigler, A. B. Heckert, S. G. Lucas (eds.), Paleontology and Geology of the Snyder Quarry, New Mexico Museum of Natural History and Science Bulletin 21:115-126 [R. Butler/R. Butler]
31989		A. B. Heckert, K. E. Zeigler, S. G. Lucas and L. F. Rinehart. 2003. Coelophysoids (Dinosauria: Theropoda) from the Upper Triassic (Revueltian) Snyder Quarry. In K. E. Zeigler, A. B. Heckert, S. G. Lucas (eds.), Paleontology and Geology of the Snyder Quarry, New Mexico Museum of Natural History and Science 24:127-132 [R. Butler/R. Butler]
27226	ETE	A. B. Heckert and K. E. Ziegler. 2003. The Late Triassic Snyder Quarry: a brief history of discovery and excavation. 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 24:5-13 [M. Carrano/M. Carrano]
24915	ETE	R. B. Irmis, S. J. Nesbitt, K. Padian, N. D. Smith, A. H. Turner, D. T. Woody, and A. Downs. 2007. A Late Triassic dinosauromorph assemblage from New Mexico and the rise of dinosaurs. Science 317:358-361 [M. Carrano/M. Carrano]
58630		H. Jenkins and A. B. Heckert. 2004. Revueltian (early–mid Norian) microvertebrates from the Upper Triassic Snyder Quarry, Painted Desert Member, Petrified Forest Formation, north-central New Mexico. Journal of Vertebrate Paleontology 24(3, suppl.):75A [M. Carrano/M. Carrano]
27235	ETE	S. G. Lucas, K. E. Ziegler, and A. B. Heckert. 2003. Invertebrate paleontology of the Upper Triassic Snyder Quarry, Chinle Group, Chama Basin, 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 24:63 [M. Carrano/M. Carrano]
24939	ETE	R. J. Mutter and A. B. Heckert. 2006. Re-investigation of enigmatic fish bones known as colobodontid/perleidid toothplates from the Upper Triassic Chinle Group (southwestern U.S.A.). In J. D. Harris, S. G. Lucas, J. A. Spielmann, M. G. Lockley, A. R. C. Milner, & J. I. Kirkland (eds.), The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:530-542 [M. Carrano/M. Carrano/P. Wagner]
24249	ETE	S. J. Nesbitt, R. B. Irmis, and W. G. Parker. 2007. A critical re-evaluation of the Late Triassic dinosaur taxa of North America. Journal of Systematic Palaeontology 5(2):209-243 [M. Carrano/M. Carrano]
32136		W. G. Parker. 2007. Reassessment of the Aetosaur "Desmatosuchus" chamaensis with a reanalysis of the phylogeny of the Aetosauria (Archosauria: Pseudosuchia). Journal of Systematic Palaeontology 5:41-67 [R. Butler/R. Butler]
27236	ETE	L. F. Rinehart, S. G. Lucas, and A. B. Heckert. 2003. An early brachyuran (Malacostraca: Decapoda) from the Upper Triassic Snyder Quarry, Petrified Forest Formation, 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 24:67-70 [M. Carrano/M. Carrano/M. Clapham]
26454	ETE	J. A. Spielmann, S. G. Lucas, L. F. Rinehart, A. P. Hunt, A. B. Heckert and R. M. Sullivan. 2007. Oldest records of the Late Triassic theropod dinosaur Coelophysis bauri. In S. G. Lucas & J. A. Spielmann (eds.), The Global Triassic. New Mexico Museum of Natural History and Science Bulletin 41:384-401 [M. Carrano/M. Carrano]
27233	5%	L. H. Tanner, M. G. Chapman, and K. E. Ziegler. 2003. Facies analysis and sedimentologic model for deposition of bone-bearing strata in the Upper Triassic Petrified Forest Formation at the Snyder Quarry, 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 24:41-48 [M. Carrano/M. Carrano]
78474		K. E. Zeigler. 2005. The Snyder Quarry: a fire-related Upper Triassic fossil assemblage in north-central New Mexico. In S. G. Lucas, K. E. Zeigler, V. W. Lueth, & D. E. Owen (eds.), New Mexico Geological Society, 56th Field Conference, Geology of the Chama Basin 56:48-50 [M. Carrano/M. Carrano]
78478		K. E. Zeigler, A. B. Heckert, and S. G. Lucas. 2002. A tale of two sites: a taphonomic comparison of two Late Triassic (Chinle Group) vertebrate fossil localities from New Mexico. In A. B. Heckert & S. G. Lucas (ed.), Upper Triassic Stratigraphy and Paleontology. New Mexico Museum of Natural History and Science Bulletin 21:285-290 [M. Carrano/M. Carrano]
31991		K. E. Zeigler, A. B. Heckert, and S. G. Lucas. 2003. An illustrated atlas of the phytosaur (Archosauria: Parasuchidae) postcrania from the Upper Triassic Snyder Quarry (Petrified Forest Formation, Chinle Group). In K. E. Zeigler, A. B. Heckert, S. G. Lucas (eds.), Paleontology and Geology of the Snyder Quarry, New Mexico Museum of Natural History and Science 24:89-103 [R. Butler/R. Butler]
31992		K. E. Zeigler, A. B. Heckert, and S. G. Lucas. 2003. Phytosaur (Archosauria: Parasuchidae) cranial and mandibular material from the Upper Triassic Snyder Quarry (Petrified Forest Formation, Chinle Group). In K. E. Zeigler, A. B. Heckert, S. G. Lucas (eds.), Paleontology and Geology of the Snyder Quarry, New Mexico Museum of Natural History and Science 24:81-88 [R. Butler/R. Butler]
78472		K. E. Zeigler, A. B. Heckert, and S. G. Lucas. 2005. Taphonomic analysis of a fire-related Upper Triassic vertebrate fossil assemblage from north-central New Mexico. In S. G. Lucas, K. E. Zeigler, V. W. Lueth, & D. E. Owen (eds.), New Mexico Geological Society, 56th Field Conference, Geology of the Chama Basin 56:341-354 [M. Carrano/M. Carrano]
31718		K. E. Zeigler, S. G. Lucas, and A. B. Heckert. 2002. A phytosaur skull from the Upper Triassic Snyder Quarry (Petrified Forest Formation, Chinle Group) of north-central New Mexico. In A. B. Heckert, S. G. Lucas (eds.), Upper Triassic Stratigraphy and Paleontology, New Mexico Museum of Natural History and Science Bulletin 21:171-177 [R. Butler/R. Butler]
27234	ETE	K. E. Ziegler. 2003. Taphonomic analysis of the Snyder Quarry: a fire-related Upper Triassic fossil assemblage from 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 24:49-62 [M. Carrano/M. Carrano]
31988		K. E. Ziegler, A. B. Heckert, and S. G. Lucas. 2003. The vertebrate fauna of the Upper Triassic (Revueltian) Snyder Quarry. In K. E. Zeigler, A. B. Heckert, S. G. Lucas (eds.), Paleontology and Geology of the Snyder Quarry, New Mexico Museum of Natural History and Science Bulletin 24:71-79 [R. Butler/R. Butler/R. Butler]