RAM V201017 (RAM Collection) (Cretaceous of the United States)

Also known as Grand Staircase-Escalante National Monument

Where: Garfield County, Utah (37.5° N, 111.5° W: paleocoordinates 45.4° N, 82.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Kaiparowits Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• Upper Campanian Kaiparowits Formation

•

•Horizon—Upper portion of the middle unit of the Kaiparowits Formation, 17 m above an ash bed tentatively correlated to ash KBC-109, which has been dated to 75.51± 0.15 Ma

• bed-level stratigraphic resolution

Environment/lithology: fluvial; tabular sandstone

• The Kaiparowits Formation is a non-marine sequence that was deposited upon a low-relief inland alluvial plain environment (Roberts et al. 2005). Radiometric dating demonstrates that it spans 76.1–74 Ma and thus dates to the Judithian North American Land Mammal Age (Cifelli et al. 2004; Roberts et al. 2005). It is contemporaneous with a number of well-studied late Campanian terrestrial vertebrate faunas of western North America (Gates et al. 2010).
• Indurated tabular sandstone with abundant plant fragments and clay casts

Size class: macrofossils

Collected by RAM

Collection methods: quarrying, surface (in situ), mechanical,

Primary reference: A. A. Farke, M. M. Henn, S. J. Woodward and H. A. Xu. 2014. Leidyosuchus (Crocodylia: Alligatoroidea) from the Upper Cretaceous Kaiporowits Formation (Late Campanian) of Utah, USA. PaleoBios 30(3):72-88 [P. Mannion/J. Tennant]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 176982: authorized by Philip Mannion, entered by Jonathan Tennant on 11.03.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Crocodylia -
Leidyosuchus sp.
Leidyosuchus sp. Lambe 1907 crocodilian
RAM 14527, partial skeleton including partial lower jaws, left humerus, cervical rib, dorsal rib, cervical vertebra, dorsal vertebrae, and numerous osteoderms
 Testudinata -
Testudinata indet.
Testudinata indet. Oppel 1811 turtle
Humerus
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet.
Lepisosteidae indet. Cuvier 1825 gar
Bivalvia
 Unionida - Unionidae
Unionidae indet.
Unionidae indet. Rafinesque 1820 freshwater mussel