# Cornwallius

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> Markdown URL: https://mediated.wiki/source/Cornwallius.md
> Source: https://en.wikipedia.org/wiki/Cornwallius
> Source revision: 1355313080
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

{{Short description|Extinct genus of Desmostylidae mammals}}
{{Speciesbox
| fossil_range = Late Oligocene
| image =
| image_caption =
| genus = Cornwallius
| parent_authority = {{Harvnb|Hay|1923}}
| species = sookensis
| authority = ({{Harvnb|Cornwall|1922}})
}}

'''''Cornwallius''''' is an extinct [herbivorous](/source/herbivorous) [marine mammal](/source/marine_mammal) of the [family](/source/Family_(taxonomy)) [Desmostylidae](/source/Desmostylidae). ''Cornwallius'' lived along the [North America](/source/North_America)n Pacific Coast from the [Early Oligocene](/source/Early_Oligocene) ([Chattian](/source/Chattian)) into the Early Miocene (28.4 [mya](/source/Annum)—20.6 Mya) and existing for approximately {{Mya|28.4-20.6|million years}}.<ref>{{Paleodb|36957|Cornwallius}}. Retrieved 16 June 2013.</ref><ref name="Paleodb-Muir-Creek">{{Paleodb|collection|63086|Muir Creek (Oligocene of Canada)}}. Retrieved 16 June 2013.</ref>

The type locality is the Chattian [Sooke Formation](/source/Sooke_Formation), [Vancouver Island](/source/Vancouver_Island), [British Columbia](/source/British_Columbia), Canada ({{Coord|48.4|-123.9|display=inline}}, paleocoordinates {{Coord|48.0|-115.0|display=inline}}).<ref name="Paleodb-Muir-Creek" />

''Cornwallius'' was named by {{Harvnb|Hay|1923}}. Its type is ''Desmostylus sookensis'', named by {{Harvnb|Cornwall|1922}} and recombined to ''Cornwallius sookensis'' by {{Harvnb|Hay|1923}}.<ref>{{Paleodb|72051|Cornwallius sookensis}}. Retrieved 16 June 2013.</ref>

Fossils have been discovered from [Baja California Peninsula](/source/Baja_California_Peninsula), [Oregon](/source/Oregon) and [Washington](/source/Washington_(state)) coasts, and [Unalaska Island](/source/Unalaska_Island).<ref>{{Harvnb|Beatty|2006b}}</ref>

==Notes==
{{Reflist}}

==References==
{{Refbegin}}
* {{Cite journal
 | last = Beatty | first = Brian Lee
 | title = Rediscovered specimens of ''Cornwallius'' (Mammalia, Desmostylia) from Vancouver Island, British Columbia, Canada
 | year = 2006a | journal = Vertebrate Palaeontology | volume = 1 | issue = 1 | pages = 1–6
 | url = http://www.palarch.nl/wp-content/beatty_bl_rediscovered_specimens_of_cornwallius_mammalia_desmostylia_from_vancouver_island_british_columbia_canada_palarchs_journal_of_vertebrate_palaeontology_1_1_2006.pdf | access-date = 16 June 2013
 }}<!-- {{Harvnb|Beatty|2006}} -->{{deadlink|date=October 2025}}
* {{Cite journal
 | last = Beatty | first = Brian Lee
 | title = Specimens of ''Cornwallius sookensis'' (Desmostylia, Mammalia) from Unalaska Island, Alaska
 | year = 2006b | journal = Journal of Vertebrate Paleontology | volume = 26 | issue = 3 | pages = 785–87
 | jstor = 4524623 | doi=10.1671/0272-4634(2006)26[785:socsdm]2.0.co;2| s2cid = 85919379
 }}<!-- {{Harvnb|Beatty|2006}} -->
* {{Cite journal
 | last = Cornwall | first = I. E.
 | title = Some Notes on the Sooke Formation, Vancouver Island, B.C.
 | year = 1922 | journal = Canadian Field-Naturalist | volume = 36 | issue = 7
 | pages = 121–23
 | doi = 10.5962/p.338167
 }}<!-- {{Harvnb|Cornwall|1922}} -->
* {{Cite journal
 | last = Hay | first = O. P. | authorlink = Oliver Perry Hay
 | title = Characteristics of sundry fossil vertebrates
 | year = 1923 | journal = Pan-American Geologist | volume = 39 | pages = 101–20
 | oclc = 38855496 }}<!-- {{Harvnb|Hay|1923}} -->
{{Refend}}

{{Portal|Paleontology}}
{{Paenungulata}}
{{Taxonbar|from2=Q5172044|from1=Q18579130}}

Category:Desmostylians
Category:Prehistoric placental genera
Category:Fossil taxa described in 1923
Category:Oligocene mammals of North America

{{Paleo-mammal-stub}}

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Adapted from the Wikipedia article [Cornwallius](https://en.wikipedia.org/wiki/Cornwallius) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Cornwallius?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.