Lone Hunter Posted January 29, 2022 Share Posted January 29, 2022 In the few trips made to Trinity river in Tarrant county I've spotted several peices of these large whorls, I'm wondering if these are from Mariella ammonites or a heteromorph? I have found some pretty big Mariellas in Grayson marl but nothing close to this size. Is that maybe where they originate?, is the Trinity cutting through that formation? I'd love to figure that out and try to find a more complete one. Link to comment Share on other sites More sharing options...
JamieLynn Posted January 29, 2022 Share Posted January 29, 2022 Definitely Mariella. They can get quite large in the Grayson. This was not the biggest I found and it's only a partial. Also, Mariellas are heteromorphs. Just means they are not curled in like "normal" ammonites. 2 1 1 www.fossil-quest.com 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