Jv. Natica (Genus) from the Keasey Formation (marine deep water)

[OregonFossil]

In Oregon Fossils by Elizabeth and William Orr, state that members of the Genus Natica live in a continental shelf environment. This specimen measured 8.99mm on the long axis of the image, and 7.39mm on cross section. Climate conditions changed from sub-tropical to temperate in between the Keasey and the Pittsburg Bluff formations. There is only about a 10% species overlap. The Genus Natica is still living today. I was unable to find a species ID reference for this specimen. I have found significantly larger specimens of this Genus in the Pittsburg Bluff formation. The specimen is partial shell and cast from the shell (basically the foot is cast).

 

Edited April 8, 2022 by OregonFossil

[Myrmica]

Nice find.  Natica can also be found in other Pacific northwest formations, like the Clallam. 

[OregonFossil]

2 minutes ago, Myrmica said:

Nice find.  Natica can also be found in other Pacific northwest formations, like the Clallam. 

Your are right. I find lots of cross references on JSTOR (Our library has a subscription) for various local formations with others near and far.