UCMP V-78020 (Paleocene of the United States)

Where: Garfield County, Montana (47.6° N, 107.0° W: paleocoordinates 54.0° N, 81.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Tullock Formation, Puercan (66.0 - 63.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; gray siltstone and fine-grained sandstone

• Finely interbedded gray silts and fine-grained sandstones

Size class: macrofossils

Collected by C. Engdahl; reposited in the UCMP

Primary reference: M. T. Greenwald. 1979. Leidyosuchus canadensis (Crocodilia: Crocodylidae) from the Early Paleocene of Montana. PaleoBios 30:1-6 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 123518: authorized by Philip Mannion, entered by Philip Mannion on 25.01.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

 Acipenseriformes - Acipenseridae
Acipenser sp. Linnaeus 1758 sturgeon
 Amiiformes - Amiidae
Amia sp. Linnaeus 1766 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp. de Lacep├Ęde 1803 gar
 Testudines - Trionychidae
Trionychidae indet. Gray 1825 softshell turtle
 Crocodylia -
Borealosuchus sternbergii Gilmore 1910 crocodilian
UCMP 119282 (rostrum)
 Choristodera -
Champsosaurus sp. Cope 1876 choristodere