Alsea Formation facts for kids

Kids Encyclopedia Facts

Quick facts for kids Alsea Formation Stratigraphic range: Rupelian (Whitneyan) ~33.7–30.6Ma PreЄ Є O S D C P T J K Pg N ↓
Type	Formation
Underlies	Yaquina Formation
Lithology
Primary	Siltstone
Other	Mudstone
Location
Coordinates	44°36′N 124°00′W / 44.6°N 124.0°W / 44.6; -124.0
Approximate paleocoordinates	44°18′N 113°06′W / 44.3°N 113.1°W / 44.3; -113.1
Region	Lincoln County, Oregon
Country	United States

The Alsea Formation is a geologic formation in Oregon. It preserves fossils dating back to the Rupelian stage of the Oligocene period.

Fossil content

The following fossils have been reported from the formation:

Mammals

Aetiocetus cotylalveus
Maiabalaena nesbittae
Simocetus rayi

Fish

Orthechinorhinus davidae

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Alsea Formation Facts for Kids. Kiddle Encyclopedia.