Yaquina Formation
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RegionLincoln County, Oregon
CountryUnited States
| Yaquina Formation | |
|---|---|
| Stratigraphic range: Chattian | |
| Type | Geological formation |
| Location | |
| Coordinates | 44°43′16″N 124°00′14″W / 44.721°N 124.004°W |
| 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.
Mammals
Carnivorans
| Carnivorans reported from the Yaquina Formation | |||||
|---|---|---|---|---|---|
| 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
| 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
| 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. | ||
Fish
Bony fish
| 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
| 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. | |
