Peacock Canyon tracksite (Triassic of the United States)

Where: Union County, New Mexico (36.9° N, 103.4° W: paleocoordinates 11.8° N, 42.8° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Sloan Canyon Formation (Chinle Group), Norian (228.0 - 208.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: "floodplain"; fine-grained, medium, quartzose, white sandstone and gray, green, white, calcareous siltstone

• channel and overbank facies with footprints
• "fine-grained, buff-colored sandstone"; "white, ripple-marked, cross-laminated medium-grained, quartzose sandstone"

•"whitish gray-green, very thinly bedded, calcareous siltstones and fine sandstones"

Size class: macrofossils

Preservation: trace

Collected by Hyde in 1927

Collection methods: quarrying,

Primary reference: D. Baird. 1964. Dockum (Late Triassic) reptile footprints from New Mexico. Journal of Paleontology 38(1):118-125 [M. Carrano/M. Carrano/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 46560: authorized by Matthew Carrano, entered by Matthew Carrano on 19.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Osteichthyes
 Therapsida -
Therapsida indet.1
Therapsida indet.1 Broom 1905 therapsid
Reptilia
 Squamata -
Rhynchosauroides sp.
Rhynchosauroides sp. Maidwell 1911 squamates
 Pseudosuchia - Chirotheriidae
Brachychirotherium sp.1
Brachychirotherium sp.1 Beurlen 1950 archosaur
 Phytosauria - Parasuchidae
? Apatopus sp.4
? Apatopus sp.4 Baird 1957 archosaur
 Ornithischia - Moyenisauropodidae
Anomoepus sp.2
Anomoepus sp.2 Hitchcock 1848 ornithopod
 Theropoda - Grallatoridae
"cf. Anchisauripus hitchcocki" = Grallator tenuis
"cf. Anchisauripus hitchcocki" = Grallator tenuis Hitchcock 1858 theropod
 Saurischia -
Pseudotetrasauropus sp.4, Eosauropus cimarronensis n. gen. n. sp.5, Coelurosaurichnus sp.1
Pseudotetrasauropus sp.4 Ellenberger 1965 prosauropod
Eosauropus cimarronensis n. gen. n. sp.5 Lockley et al. 2006 sauropodomorph
Coelurosaurichnus sp.1 Huene 1941 saurischian
 Ichnofossils -
cf. Kouphichnium sp.1, cf. Acanthichnus tardigradus1, Scoyenia sp.3
cf. Kouphichnium sp.1 Nopcsa 1923
Scoyenia sp.3 White 1929
1Conrad et al. 1987; 2Haubold 1971; 3Lockley 1986; 4Lockley and Hunt 1995; 5Lockley et al. 2006