Yaquina Formation | |
---|---|
Stratigraphic range: Chattian | |
Type | Geological formation |
Location | |
Region | Lincoln County, Oregon |
Country | United States |
Type section | |
Named for | Yaquina Head |
The Yaquina Formation is a geologic formation in Oregon. It preserves fossils dating back to the Paleogene period.
Carnivorans reported from the Yaquina Formation | |||||
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Genus | Species | Presence | Material | Notes | Images |
Enaliarctos | E. barnesi | South of Beaver Creek, Lincoln County, Oregon. [1] | USNM 314295 (anterior half of cranium and associated mandibular rami). [1] | A pinnipedimorph. | |
E. sp., cf. E tedfordi | Ona Beach, Lincoln County, Oregon. [2] | UCMP 253400 (associated right mandible, thoracic vertebra & 2 ribs). [2] | A pinnipedimorph. | ||
Cetaceans reported from the Yaquina Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Aetiocetus | A. cotylaveus | Lincoln County, Oregon. [3] | An aetiocetid whale. | ||
A. weltoni | Ona Beach, Lincoln County, Oregon. [4] | UCMP 122900. [4] | An aetiocetid whale. | ||
Desmostylians reported from the Yaquina Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Behemotops | B. emlongi | Seal Rock State Wayside, Lincoln County, Oregon. [5] | USNM 244033 & 186889. [5] | ||
Cornwallius | C. sookensis | "2 skulls, 4 partial mandibles, 4 isolated teeth, an innominate & a tibia". [6] | A desmostylid. | ||
Bony fish reported from the Yaquina Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Paleobathygadus | P. yaguinensis | Southwest edge of Waldport. [7] | A scale. [7] | A bathygadid also known from the Toledo Formation. | |
Promacrurus | P. alseanus | South side of Alsea Bay. [7] | A scale. [7] | A macrourid. | |
P. oregonensis | Southwest edge of Walport. [7] | Scales. [7] | A macrourid. | ||
Pyknolepidus | P. macrospinosus | South side of Alsea Bay. [7] | A scale. [7] | A macrourid. | |
Sharks reported from the Yaquina Formation | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Megachasma | M. applegatei | Upper member, Ona Beach State Park, Lincoln County, Oregon. [8] | 2 teeth (LACM 122120 and 122121). [8] | A megamouth shark also known from the Jewett Sand, Skooner Gulch & Nye Mudstone formations. | |
Chalicotheriidae is an extinct family of herbivorous, odd-toed ungulate (perissodactyl) mammals that lived in North America, Eurasia, and Africa from the Middle Eocene until the Early Pleistocene, existing from 48.6 to 1.806 mya. They are often called chalicotheres, a term which is also applied to the broader grouping of Chalicotherioidea. They are noted for their unusual morphology compared to other ungulates, such as their elongated clawed forelimbs. They are thought to have been browsers.
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