Echooka River (Cretaceous to of the United States)
Also known as UCMP V73004
Where: North Slope County, Alaska (69.4° N, 148.3° W: paleocoordinates 81.8° N, 98.0° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Ignek Formation, Coniacian to Coniacian (89.8 - 72.1 Ma)
Environment/lithology: marine; gray shale and sandstone
• dark gray shales and sandstones with interbedded coals
Size class: macrofossils
Collected by Standard Oil in 1962; reposited in the UCMP
Primary reference: L. J. Bryant. 1983. Hesperornis in Alaska. PaleoBios 40:1-8 [P. Mannion/P. Mannion]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 123520: authorized by Philip Mannion, entered by Philip Mannion on 25.01.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Aves | |
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Hesperornis sp. Marsh 1872 bird UCMP 103841 (the ventral portions of three articulated posterior dorsal vertebrae, the 20th, 21st, and 22nd in a series of 23 presacral vertebrae)
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