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[edit]

Mammals[edit]

Carnivorans[edit]

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[edit]

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[edit]

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[edit]

Bony fish[edit]

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[edit]

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[edit]

^ ^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[edit]

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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