Yaquina Formation

Yaquina Formation
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.

Fossil content

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.
Enaliarctos	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.
Aetiocetus	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.
Promacrurus	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.

References

^ ^a ^b Berta, Annalisa (1991). "New Enaliarctos* (Pinnipedimorpha) from the Oligocene and Miocene of Oregon and the Role of "Enaliarctids" in Pinniped Phylogeny". Smithsonian Contributions to Paleobiology (69): 1–33. doi:10.5479/si.00810266.69.1. hdl:10088/19145.
^ ^a ^b Poust, Ashley W.; Boessenecker, Robert W. (2018). "Expanding the geographic and geochronologic range of early pinnipeds: New specimens of Enaliarctos from Northern California and Oregon". Acta Palaeontologica Polonica. 63 (1): 25–40. doi:10.4202/app.00399.2017. S2CID 55978096.
^ Emlong, Douglas (October 1966). "A NEW ARCHAIC CETACEAN FROM THE OLIGOCENE OF NORTHWEST OREGON". Bulletin of the Museum of Natural History, University of Oregon (3): 1–51.
^ ^a ^b DEMÉRÉ, THOMAS A.; BERTA, ANNALISA (2008). "Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy". Zoological Journal of the Linnean Society. 154 (2): 308–352. doi:10.1111/j.1096-3642.2008.00414.x. ISSN 0024-4082. S2CID 20615374.
^ ^a ^b Domning, Daryl P.; Mckenna, Malcolm C.; Ray, Clayton Edward (1986). Two new Oligocene desmostylians and a discussion of tethytherian systematics. City of Washington: Smithsonian Institution Press.
^ Beatty, Brian Lee (2009-09-12). "New material of Cornwallius sookensis (Mammalia: Desmostylia) from the Yaquina Formation of Oregon". Journal of Vertebrate Paleontology. 29 (3): 894–909. Bibcode:2009JVPal..29..894B. doi:10.1671/039.029.0320. ISSN 0272-4634. S2CID 83759776.
^ ^a ^b ^c ^d ^e ^f ^g ^h David, Lore Rose (1956). "Tertiary Anacanthin Fishes from California and the Pacific Northwest; Their Paleoecological Significance". Journal of Paleontology. 30 (3): 568–607. ISSN 0022-3360. JSTOR 1300292.
^ ^a ^b Shimada, Kenshu; Welton, Bruce J.; Long, Douglas J. (March 2014). "A new fossil megamouth shark (Lamniformes, Megachasmidae) from the Oligocene-Miocene of the western United States". Journal of Vertebrate Paleontology. 34 (2): 281–290. Bibcode:2014JVPal..34..281S. doi:10.1080/02724634.2013.803975. ISSN 0272-4634. S2CID 83949683.

Sources

Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.

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[:4-1] Berta, Annalisa (1991). "New Enaliarctos* (Pinnipedimorpha) from the Oligocene and Miocene of Oregon and the Role of "Enaliarctids" in Pinniped Phylogeny". Smithsonian Contributions to Paleobiology (69): 1–33. doi:10.5479/si.00810266.69.1. hdl:10088/19145.

[:0-2] Poust, Ashley W.; Boessenecker, Robert W. (2018). "Expanding the geographic and geochronologic range of early pinnipeds: New specimens of Enaliarctos from Northern California and Oregon". Acta Palaeontologica Polonica. 63 (1): 25–40. doi:10.4202/app.00399.2017. S2CID 55978096.

[3] Emlong, Douglas (October 1966). "A NEW ARCHAIC CETACEAN FROM THE OLIGOCENE OF NORTHWEST OREGON". Bulletin of the Museum of Natural History, University of Oregon (3): 1–51.

[:2-4] DEMÉRÉ, THOMAS A.; BERTA, ANNALISA (2008). "Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy". Zoological Journal of the Linnean Society. 154 (2): 308–352. doi:10.1111/j.1096-3642.2008.00414.x. ISSN 0024-4082. S2CID 20615374.

[:1-5] Domning, Daryl P.; Mckenna, Malcolm C.; Ray, Clayton Edward (1986). Two new Oligocene desmostylians and a discussion of tethytherian systematics. City of Washington: Smithsonian Institution Press.

[6] Beatty, Brian Lee (2009-09-12). "New material of Cornwallius sookensis (Mammalia: Desmostylia) from the Yaquina Formation of Oregon". Journal of Vertebrate Paleontology. 29 (3): 894–909. Bibcode:2009JVPal..29..894B. doi:10.1671/039.029.0320. ISSN 0272-4634. S2CID 83759776.

[:5-7] ^ ^a ^b ^c ^d ^e ^f ^g ^h David, Lore Rose (1956). "Tertiary Anacanthin Fishes from California and the Pacific Northwest; Their Paleoecological Significance". Journal of Paleontology. 30 (3): 568–607. ISSN 0022-3360. JSTOR 1300292.

[:3-8] Shimada, Kenshu; Welton, Bruce J.; Long, Douglas J. (March 2014). "A new fossil megamouth shark (Lamniformes, Megachasmidae) from the Oligocene-Miocene of the western United States". Journal of Vertebrate Paleontology. 34 (2): 281–290. Bibcode:2014JVPal..34..281S. doi:10.1080/02724634.2013.803975. ISSN 0272-4634. S2CID 83949683.

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