Yaquina Formation

Last updated
Yaquina Formation
Stratigraphic range: Chattian
Type Geological formation
Location
Coordinates 44°43′16″N124°00′14″W / 44.721°N 124.004°W / 44.721; -124.004
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.

Contents

Fossil content

Mammals

Carnivorans

Carnivorans reported from the Yaquina Formation
GenusSpeciesPresenceMaterialNotesImages
Enaliarctos E. barnesiSouth 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
GenusSpeciesPresenceMaterialNotesImages
Aetiocetus A. cotylaveus Lincoln County, Oregon. [3] An aetiocetid whale.
Aetiocetus BW.jpg
A. weltoni Ona Beach, Lincoln County, Oregon. [4] UCMP 122900. [4] An aetiocetid whale.
Aetiocetus skull cast.jpg

Desmostylians

Desmostylians reported from the Yaquina Formation
GenusSpeciesPresenceMaterialNotesImages
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
GenusSpeciesPresenceMaterialNotesImages
Paleobathygadus P. yaguinensisSouthwest edge of Waldport. [7] A scale. [7] A bathygadid also known from the Toledo Formation.
Promacrurus P. alseanusSouth side of Alsea Bay. [7] A scale. [7] A macrourid.
P. oregonensisSouthwest edge of Walport. [7] Scales. [7] A macrourid.
Pyknolepidus P. macrospinosusSouth side of Alsea Bay. [7] A scale. [7] A macrourid.

Sharks

Sharks reported from the Yaquina Formation
GenusSpeciesPresenceMaterialNotesImages
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.

See also

References

  1. 1 2 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.
  2. 1 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.
  4. 1 2 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.
  5. 1 2 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.
  7. 1 2 3 4 5 6 7 8 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.
  8. 1 2 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


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