PBDB Collection

Milzer locality, MNA 853 (Triassic of the United States)

Also known as Ward Terrace

Where: Coconino County, Arizona (35.8° N, 111.2° W: paleocoordinates 14.7° N, 50.4° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Owl Rock Member (Chinle Formation), Rhaetian (208.5 - 201.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: fine channel fill; mudstone

• "distributary channel"

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: taxonomic analysis

PaleoDB collection 84015: 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

Reptilia
Diapsida -	Archosauriformes indet.¹ Archosauriformes indet.¹ Gauthier 1986 archosauromorph "cf. Ornithischia?"
Archosauria -	Archosauria indet.⁵ Archosauria indet.⁵ Cope 1869 archosaur MNA 5616, 5617, distal femora, MNA V6731, sacral centra (previously referred to cf. Postosuchus)
Loricata - Rauisuchidae	cf. Postosuchus sp., Postosuchus sp.⁵ cf. Postosuchus sp. Chatterjee 1985 rauisuchid MNA V5600, 5614, 5800, femoral heads. MNA V5618, 6734, distal femora. MNA V5601, V6727, partial tibiae. MNA 5606, partial metatarsal. MNA 5613, four partial tarsi. MNA V5609-5612, 49 vertebral fragments including centra Postosuchus sp.⁵ Chatterjee 1985 rauisuchid MNA V5604, proximal tibia
Pseudosuchia - Stagonolepididae	Typothorax coccinarum Typothorax coccinarum Cope 1875 aetosaur MNA V5540, V6706, lateral plates
Pseudosuchia - Shuvosauridae	Shuvosauridae indet.⁵, "cf. Chatterjeea sp." = Shuvosaurus² Shuvosauridae indet.⁵ Chatterjee 1993 archosaur MNA V5602, 5603, proximal tibia fragments "cf. Chatterjeea sp." = Shuvosaurus² Chatterjee 1993 archosaur
Pseudosuchia -	cf. Poposaurus sp.⁵ cf. Poposaurus sp.⁵ Mehl 1915 archosaur MNA V5605, distal tibia
Phytosauria - Parasuchidae	"Pseudopalatus buceros" = Machaeroprosopus buceros⁵, "Pseudopalatus buceros" = Machaeroprosopus buceros⁵ "Pseudopalatus buceros" = Machaeroprosopus buceros⁵ Cope 1881 archosaur "Pseudopalatus buceros" = Machaeroprosopus buceros⁵ Cope 1881 archosaur MNA V7199-7204, cranial and postcranial fragments
Theropoda -	Coelophysoidea indet.⁵ Coelophysoidea indet.⁵ Holtz 1994 coelophysoid MNA 7240, proximal femoral condyle. MNA V7239, ungual. MNA V7241, centrum
Diapsida - Doswelliidae	Vancleavea campi⁴ Vancleavea campi⁴ Long and Murry 1995 archosauromorph MNA V7205, femur
Amphibia
Temnospondyli - Metoposauridae	Metoposauridae indet.⁵ Metoposauridae indet.⁵ Watson 1919 tetrapod MNA V5576-5578, 6713, 6721, cranial fragments. MNA V5579, clavicle fragments
Chondrichthyes
Hybodontiformes - Acrodontidae	Reticulodus synergus³ Reticulodus synergus³ Murry and Kirby 2002 elasmobranch SMU, numerous isolated teeth

¹Irmis et al. 2007; ²Kirby 1993; ³Murry and Kirby 2002; ⁴Nesbitt et al. 2009; ⁵Spielmann et al. 2007