Description

Aturia angustata
Miocene
Lincoln Creek Formation
Grays Harbor County, Washington USA.

8cm phragmocone from the lower Miocene exposures on the Columbia River. Exact locality data will be furnished to the buyer

Aturia is a nautiloid genus known from the Paleocene to Miocene of various sites worldwide. Back in the Ordovician Period, nautiloids ascended to the level of apex predator and survived serious competition from various jawed fish groups during the Devonian.  They escaped mass extinction events all the way into the Cenozoic Era.  They rediversified before going into decline by the Late Miocene.  Today, only a few species survive in the Indo-Paciifc region.