historianmichael Posted April 13, 2021 Share Posted April 13, 2021 I recently found this Ecphora in an exposure of the Late Pliocene Yorktown Formation, Rushmere Member in Virginia. I was really excited to find it. Sadly the final whorl is missing but I will take a 98% complete Ecphora any day. Ward lists Ecphora quadricostata as the only Ecphora from the Yorktown Formation. This may be Ecphora quadricostata but the ribs are not as prominent at the opening so I was not sure. I know that there are many Ecphora experts on here so before I put down the wrong identification I thought I might as well check with others. Any help is greatly appreciated. Thanks! 2 Follow me on Instagram (@fossil_mike) to check out my personal collection of fossils collected and acquired over more than 15 years of fossil hunting! Link to comment Share on other sites More sharing options...
bthemoose Posted April 13, 2021 Share Posted April 13, 2021 I can’t help with the ID, but that’s a gorgeous find! 1 Link to comment Share on other sites More sharing options...
hemipristis Posted April 13, 2021 Share Posted April 13, 2021 Wonderful find! 1 'Those who cannot remember the past are condemned to repeat it.' George Santayana Link to comment Share on other sites More sharing options...
MikeR Posted April 13, 2021 Share Posted April 13, 2021 It's Ecphora quadricostata which can be highly variable especially as it ages. As the animal matured, ribbing became reduced unlike earlier E. gardnerae and E. meganae in which ribbing remained strong throughout their life. Ward's Chesapeake Miocene publication is still the best reference for Ecphora. Mike 1 "A problem solved is a problem caused"--Karl Pilkington "I was dead for millions of years before I was born and it never inconvenienced me a bit." -- Mark Twain Link to comment Share on other sites More sharing options...
historianmichael Posted April 13, 2021 Author Share Posted April 13, 2021 44 minutes ago, MikeR said: It's Ecphora quadricostata which can be highly variable especially as it ages. As the animal matured, ribbing became reduced unlike earlier E. gardnerae and E. meganae in which ribbing remained strong throughout their life. Ward's Chesapeake Miocene publication is still the best reference for Ecphora. Mike Awesome! Thank you so much Mike! Follow me on Instagram (@fossil_mike) to check out my personal collection of fossils collected and acquired over more than 15 years of fossil hunting! Link to comment Share on other sites More sharing options...
FossilDAWG Posted April 13, 2021 Share Posted April 13, 2021 That is a very nice one! I don't see that the final whorl is missing, though. There is a small bit of damage at the very tip of the aperture, as is almost always the case. If the last whorl was missing you would be able to see a scar where it was attached to the previous whorl. Don 2 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now