Pyramid Hill, upper concretion-bearing bed (Miocene of the United States)

Also known as UCMP V6916, LACM 1628

Where: Kern County, California (35.5° N, 118.8° W: paleocoordinates 35.3° N, 111.2° W)

• coordinate based on political unit

When: Jewett Formation, Aquitanian (23.0 - 20.4 Ma)

• upper concretion-bearing bed

Environment/lithology: marine; sandstone

Size class: macrofossils

Reposited in the LACM

Primary reference: R. H. Tedford, T. Galusha, M. F. Skinner, B. E. Taylor, R. W. Fields, J. R. Macdonald, J. M. Rensberger, S. D. Webb, and D. P. Whistler. 1987. Faunal succession and biochronology of the Arikareean through Hemphillian interval (late Oligocene through earliest Pliocene epochs) in North America. In M. O. Woodburne (ed.), Cenozoic Mammals of North America: Geochronology and Biostratigraphy 153-210 [J. Alroy/J. Alroy/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 19485: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Mark Uhen and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• see Berta and Ray 1990 for locality info
Mammalia
 Carnivora -
Pinnarctidion bishopi n. gen. n. sp.2 Barnes 1979 pinniped
Enaliarctos mitchelli n. sp.2 Barnes 1979 pinniped
 Perissodactyla - Equidae
Equidae indet.1 Gray 1821 horse
 Perissodactyla - Rhinocerotidae
Menoceras sp. Troxell 1921 rhinoceros
 Artiodactyla - Tayassuidae
Hesperhys sp. Douglass 1903 peccary
Chondrichthyes
 Lamniformes - Otodontidae
Megalolamna paradoxodon n. gen. n. sp.3
Megalolamna paradoxodon n. gen. n. sp.3 Shimada et al. 2017 mackerel shark