El Cobre Canyon (Cutler Formation) ( of the United States)

Also known as El Cabre (Cope Collection)

Where: Rio Arriba County, New Mexico (36.3° N, 106.3° W: paleocoordinates 0.7° N, 36.1° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Cutler Formation, Virgilian (303.4 - 298.9 Ma)

• Based on the biostratigraphic information provided by two floral taxa, Alethopteris serlii and Neuropteris scheuchzeri, Fracasso (1980) argued for an Upper Pennsylvanian Missourian assignment, but Berman et al. (1997), while acknowledging a Late Pennsylvanian age, suggested that the beds of the canyon floor are latest Virgilian in age.

Environment/lithology: fluvial; siliciclastic sediments

Size class: macrofossils

Reposited in the AMNH, FMNH, MCZ, YPM

Primary reference: A. S. Romer. 1937. New genera and species of pelycosaurian reptiles. Proceedings of the New England Zo├Âlogical Club 16:89-95 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 34761: authorized by John Alroy, entered by Robin Whatley on 22.09.2003, edited by Torsten Liebrecht and Emma Dunne

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Dipnoi - Gnathorhizidae
Gnathorhiza sp.1 Cope 1883 lungfish
 Temnospondyli -
 Temnospondyli - Cochleosauridae
Chenoprosopus milleri6 Mehl 1913 tetrapod
UCLA specimens and UCMP 33439, 34168, 34174 (skulls and mandibles). Age of specimens discussed by Fracasso (1980)
 Temnospondyli - Dissorophidae
Platyhystrix rugosus4 Case 1910 tetrapod
Aspidosaurus novomexicanus n. sp.8 Williston 1911 tetrapod
YPM 810 (Holotype; partial skull and skeleton)
 Cotylosauria -
Chamasaurus dolichognathus7 Williston 1915 tetrapod
 Synapsida - Ophiacodontidae
"Dimetrodon navajovicus n. sp." = Ophiacodon navajovicus2, "Ophiacodon navajovicus" = Ophiacodon navajovicus4
"Dimetrodon navajovicus n. sp." = Ophiacodon navajovicus2 Case 1907 ophiacodont
AMNH 4776, 4777 (type), 4781, 4783, 4784, 4799 (part); YPM 1383 ("large amount of isolated bones representing a number of individuals, mostly immature; those figured by Williston (1914) [...] bear the number 2837"); MCZ 1595; FMNH (WM) 1101 (part); catalogue numbers and comments are from Romer & Price (1940)
"Ophiacodon navajovicus" = Ophiacodon navajovicus4 Case 1907 ophiacodont
 Synapsida - Varanopidae
Aerosaurus greenleeorum n. gen. n. sp. Romer 1937 synapsid
FMNH (WM) 464 (type)
Ruthiromia elcobriensis n. gen. n. sp.3 Eberth and Brinkman 1983 synapsid
MCZ 3150 (type)
 Synapsida - Edaphosauridae
cf. Edaphosaurus novomexicanus4 Williston and Case 1913 synapsid
 Synapsida - Sphenacodontidae
"Sphenacodon ferox" = Sphenacodon ferox4, "Elcabrosaurus baldwini n. gen. n. sp." = Sphenacodon ferox2
"Sphenacodon ferox" = Sphenacodon ferox4 Marsh 1878 synapsid
"Elcabrosaurus baldwini n. gen. n. sp." = Sphenacodon ferox2 Marsh 1878 synapsid
AMNH 4778 (type); catalogue number taken from Reisz (1986)
 Caseasauria - Eothyrididae
Baldwinonus trux n. gen. n. sp.5
Baldwinonus trux n. gen. n. sp.5 Romer and Price 1940 synapsid
AMNH 4780 (type)
 Pelycosauria -
Nitosaurus jacksonorum n. gen. n. sp.
Nitosaurus jacksonorum n. gen. n. sp. Romer 1937 pelycosaur
AMNH 4782
 Cotylosauria - Limnoscelidae
Limnoscelis paludis7 Williston 1911 tetrapod
 Cotylosauria - Diadectidae
Desmatodon hollandi4 Case 1908 tetrapod
2 specimens (jaw fragments)
aff. Desmatodon ? hollandi4 Case 1908 tetrapod
"Diasparactus zenos" = Diadectes zenos1 Case 1910 tetrapod