Stovall's Pit 8, Kenton (OMNH V97) (Jurassic of the United States)

Also known as OK-4, WPA, gator pit

Where: Cimarron County, Oklahoma (36.9° N, 103.0° W: paleocoordinates 32.4° N, 51.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Kenton Member (Morrison Formation), Tithonian (152.1 - 145.0 Ma)

• 34 m above the J5 unconformity

• bed-level stratigraphic resolution

Environment/lithology: pond; mudstone

• "The bone-bearing horizon at Quarry 8 consists of a 20-cm-thick, fossiliferous lacustrine smectitic mudstone, which grades vertically to a 50-cm-thick, paludal mudstone facies. Capping the paludal facies locally is a 50-cm-thick, 5-m- wide, silty mudstone splay distributary channel. A 10-cm-thick floodplain mudstone bed overlies the silty splay mudstone bed and grades into banded mudstone paleosols, indicating the complete desiccation of the water hole."

Size class: macrofossils

Collected by J. W. Stovall in the 1930s

Collection methods: quarrying, mechanical,

Primary reference: J. W. Stovall. 1938. The Morrison of Oklahoma and its dinosaurs. Journal of Geology 46:583-600 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 49598: authorized by Matthew Carrano, entered by Matthew Carrano on 20.04.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Osteichthyes
 Osteichthyes -
Osteichthyes indet.2
Osteichthyes indet.2 Huxley 1880 bony fish
"a small unidentified piscivorous osteichthyan"
Reptilia
 Ornithischia -
Camptosaurus sp.2
Camptosaurus sp.2 Marsh 1885 ornithopod
 Theropoda -
Tetanurae indet.2, ? Coelurosauria indet.4
Tetanurae indet.2 Gauthier 1986 tetanuran theropod
"a small basal tetanuran"
 Loricata - Goniopholididae
"Goniopholis stovalli n. sp." = Amphicotylus stovalli1
"Goniopholis stovalli n. sp." = Amphicotylus stovalli1 Bronzati et al. 2012 crocodilian
skulls
 Loricata -
Crocodylia indet.3
Crocodylia indet.3 crocodilian
"crocodile bones"
 Testudines -
"Chelonia indet." = Testudines3
"Chelonia indet." = Testudines3 Batsch 1788 turtle
 Testudinata - Pleurosternidae
Glyptops plicatulus2, Dinochelys whitei2
Glyptops plicatulus2 Cope 1877 turtle
Dinochelys whitei2 Gaffney 1979 turtle
Osteichthyes
 Dipnoi - Ceratodontidae
Ceratodus guentheri2, Ceratodus ? frazieri2
Ceratodus guentheri2 Marsh 1878 lungfish
Ceratodus ? frazieri2 Ostrom 1970 lungfish
Gnathostomata
  -
Actinopterygii indet.3
Actinopterygii indet.3 ray-finned fish
"small fish vertebrae"
Actinopteri
 Holostei -
Amiiformes indet.2
Amiiformes indet.2 Hay 1929 bowfin
1Foster 2003; 2Richmond et al. 2020; 3Stovall 1943; 4Turner and Peterson 1999