Helmick Hill (Eocene of the United States)
Where: Polk County, Oregon (44.8° N, 123.4° W: paleocoordinates 45.8° N, 110.0° W)
• coordinate estimated from map
When: Spencer Formation, Bartonian (41.3 - 38.0 Ma)
• age after Nesbitt (2018)
Environment/lithology: marine; sandstone
Size class: macrofossils
Primary reference: B. J. Welton. 1972. Fossil sharks in Oregon. The Ore Bin 34(10):161-170 [M. Uhen/M. Uhen/M. Uhen]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 201281: authorized by Mark Uhen, entered by Mark Uhen on 03.05.2019
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
Chondrichthyes | |
Myliobatis sp. Cuvier 1816 eagle ray | |
Heterodontus sp. de Blainville 1816 bullhead shark | |
Squatina sp. Dumeril 1806 angel shark | |
Squalus sp. Linnaeus 1758 dogfish shark | |
Isurus sp. Rafinesque 1810 mackerel shark | |
"Odontaspis macrota" = Otodus macrotus
"Odontaspis macrota" = Otodus macrotus Agassiz 1838 mackerel shark |