Hunting for Aturia on the Olympic Peninsula

[Cam G]

Hello! I don't see too many aturia specimens from Washington on this forum so here are a couple from the last 2-3 weeks of hunting down south in Pacific County.

 

I've read they are Oligocene in age and come out of the Lincoln Creek Formation. What's interesting, however, to my knowledge most fossils coming out of this formation are in concretions. Does this mean the fossils you find loose like this eroded out of a concretion or were they deposited/fossilized in a different manner?

 

Cheers! 

 

-Cam

 

 

Edited August 9, 2022 by Cam G

[Thomas.Dodson]

Very nice, thanks for showing. I've been looking for Aturia lately in a very different place (Mississippi) with not much luck. Only fragments so far.

[Al Dente]

56 minutes ago, Cam G said:

Does this mean the fossils you find loose like this eroded out of a concretion or were they deposited/fossilized in a different manner?

 

These look to be silicified. There were some nice silicified ones posted several years ago. Here's one post-http://www.thefossilforum.com/index.php?/topic/33059-eocene-nautilus-aturia-completely-replaced-with-agate/

Edited August 9, 2022 by Al Dente

[Cam G]

1 hour ago, Al Dente said:

 

These look to be silicified. There were some nice silicified ones posted several years ago. Here's one post-http://www.thefossilforum.com/index.php?/topic/33059-eocene-nautilus-aturia-completely-replaced-with-agate/

Interesting so they are not from concretions

[sixgill pete]

Beautiful Aturia's. Do you know what the species is?  

[Cam G]

20 hours ago, sixgill pete said:

Beautiful Aturia's. Do you know what the species is?  

 

From my research I believe the majority of nautiloids found in Pacific County of SW WA state are Aturia Angustata. 

[Tidgy's Dad]

Very pretty! 

[sixgill pete]

1 hour ago, Cam G said:

 

From my research I believe the majority of nautiloids found in Pacific County of SW WA state are Aturia Angustata. 

 

Thanks. They are amazing. Here in N.C. we find Aturia alabamensis. Thats one in my profile picture!

Edited August 19, 2022 by sixgill pete