''Hydrotherikornis oregonus'' is an extinct species of
auk
Auks or alcids are birds of the family Alcidae in the order Charadriiformes. The alcid family includes the Uria, murres, guillemots, Aethia, auklets, puffins, and Brachyramphus, murrelets. The family contains 25 extant or recently extinct speci ...
. The fossil specimen was found near
Coos Bay
Coos Bay (Hanis language, Coos language: Atsixiis or Hanisich) is an estuary where the Coos River enters the Pacific Ocean, the estuary is approximately 12 miles long and up to two miles wide. It is the largest estuary completely within Oregon sta ...
on the Oregon coast. It was found in 1926 and published in 1931. The distal tibiotarsus late
Eocone fossil is one of the earliest examples of
pan-Alcidae in North American.
References
{{Taxonbar, from=Q20817843
Auks
Fossils of the United States
Extinct birds of North America