PBDB Collection

Billingsley Bonebed, MNA 360 (Triassic of the United States)

Also known as Ward Terrace

Where: Coconino County, Arizona (35.7° N, 111.1° W: paleocoordinates 11.5° N, 49.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Owl Rock Member (Chinle Formation), Norian (228.0 - 208.5 Ma)

• Surrounds poorly defined Norian-Rhaetian boundary. Kent et al. 2019 state the boundary falls within magnetozone PF1r which corresponds to chron polarity E17 which is approximately 209.5Ma.

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; mudstone

• "playa/lacustrine"

Size class: mesofossils

Primary reference: R. E. Kirby. 1991. A vertebrate fauna from the Upper Triassic Owl Rock Member of the Chinle Formation in Northern Arizona, Northern Arizona University. 1-476 [R. Butler/R. Butler]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 84017: authorized by Matthew Carrano, entered by Matthew Carrano on 15.09.2008, edited by Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Chondrichthyes
Hybodontiformes - Acrodontidae	Reticulodus synergus³ Reticulodus synergus³ Murry and Kirby 2002 elasmobranch MNA V6062-V6069, 6822-6830, 6839, 6070-6073, 6040-6843, 6847, crowns
Gnathostomata
-	Osteichthyes "Morphotype A" Osteichthyes "Morphotype A" bony fish "Ichthyolith Morphotype A"; MNA V7049-7050, isolated denticles
Reptilia
Diapsida -	Archosauriformes indet.¹ Archosauriformes indet.¹ Gauthier 1986 archosauromorph MNA V7242-7252, V7261-7262, teeth
Theropoda -	Theropoda indet.² Theropoda indet.² theropod MNA V7233, V7234-7236, teeth. MNA V7237, astragalus
Phytosauria - Parasuchidae	"Pseudopalatus buceros" = Machaeroprosopus buceros⁴, "Pseudopalatus buceros" = Machaeroprosopus buceros⁴ "Pseudopalatus buceros" = Machaeroprosopus buceros⁴ Cope 1881 archosaur Abundant material, including MNA V3485 (nearly complete skull), V1596-1600, 1601-1605, 1961-1962, 1965, 1969, 1970-1981, 1983, 1985-1988, 1991-2000, 3400, 3434, 3480-3483, 3485-3494, 3496-3497, 5198-5199, 7074-7079, 7082-7087, 7090-7104, cranial and postcranial elements, at least two individuals "Pseudopalatus buceros" = Machaeroprosopus buceros⁴ Cope 1881 archosaur MNA V7085, 7129-7130, 7134-7138, 7143-7148, 7155-7161, 7163, 7166-7168, 7212-7213, cranial and postcranial elements
Pseudosuchia - Shuvosauridae	Shuvosauridae indet.⁴, "cf. Chatterjeea sp." = Shuvosaurus² Shuvosauridae indet.⁴ Chatterjee 1993 archosaur MNA V5615, femur "cf. Chatterjeea sp." = Shuvosaurus² Chatterjee 1993 archosaur
Pseudosuchia - Stagonolepididae	Typothorax coccinarum Typothorax coccinarum Cope 1875 aetosaur MNA V5532-5534, 5539, 5542-5544, 5553, 5560, 5583, 5587, 5590-5593, 6704, 6751, paramedian plates. MNA V5546-5551, 5554-5558, 5567, 6703, lateral plates. MNA V5538, centrum. MNA V5537, rib. MNA V5536, astragalus
Loricata - Sphenosuchidae	? Sphenosuchidae indet. ? Sphenosuchidae indet. Huene 1922 crocodilian MNA V5596, partial femur. MNA V5594-95, V7214-7219, fragmentary centra. MNA V7224, isolated teeth
Loricata - Rauisuchidae	cf. Postosuchus sp. cf. Postosuchus sp. Chatterjee 1985 rauisuchid MNA V5541, distal tibia. MNA V6821, sacral centrum. MNA V6736-6737, 6749, centra. MNA V6728, caudal neural arch. MNA V5607, V5619, teeth
Eosuchia - Kuehneosauridae	Kuehneosauridae indet.² Kuehneosauridae indet.² Romer 1966 crown diapsid MNA V6714, V6722-6725, postcrania. MNA V7270-7275, jaw fragments
Eosuchia - Sphenodontidae	Sphenodontidae indet. Sphenodontidae indet. Cope 1871 lepidosaur MNA V7058-7063, jaw fragments
Parareptilia - Procolophonidae	Procolophonidae indet.⁴ Procolophonidae indet.⁴ Lydekker 1889 parareptile MNA V7064, partial tooth.
Coelacanthimorpha
Coelacanthiformes - Mawsoniidae	? Chinlea sp.² ? Chinlea sp.² Schaeffer 1967 coelacanth MNA V7045-7048, isolated quadrates
Actinopteri
Semionotiformes - Semionotidae	cf. Semionotus sp. cf. Semionotus sp. Agassiz 1832 MNA V6715, dentalosplenial with teeth. MNA 7014, jaw fragment. MNA V7015-7017, 3 coronoid fragments. MNA V7018, partial cleithrum. MNA V7019-7042 (in part), scales. MNA V7044, 700 scales
Perleidiformes - Perleididae	Perleididae indet. Perleididae indet. Brough 1931 MNA V7013, dermal bone fragment. MNA V6999-7002, toothplate fragments
Osteichthyes
Palaeonisciformes - Palaeoniscidae	Turseodus cf. dolorensis Turseodus cf. dolorensis Schaeffer 1967 MNA V6848-6849, V6860-6865, flank scales
Palaeonisciformes - Redfieldiidae	Redfieldiidae indet. Redfieldiidae indet. Hutchinson 1973 MNA V6953-6954, fragmentary dermal bones. Scales catalogued under MNA V6957-6995 (some from another locality)
Bivalvia
Unionida - Unionidae	Unio sp. Unio sp. Philipsson 1788 freshwater mussel MNA N9282, disarticulated valves

¹Butler et al. 2006; ²Kirby 1993; ³Murry and Kirby 2002; ⁴Spielmann et al. 2007