Clanjones Posted August 24, 2014 Share Posted August 24, 2014 (edited) Small Isotelus? Isotelus fragment? Flexicalymene trilobite? Found in Forestville, Minnesota. Edited August 24, 2014 by Clanjones Link to comment Share on other sites More sharing options...
snakebite6769 Posted August 24, 2014 Share Posted August 24, 2014 Two is definitely an isotelus portion, 3 is a calymene, however I'm not 100% sure of the first one but I don't think it's an isotelus. I'm also not an expert hehe. Cool finds though . Link to comment Share on other sites More sharing options...
piranha Posted August 24, 2014 Share Posted August 24, 2014 Although photo 2 might be an Isotelus, there isn't enough there to be certain. There are a number of different trilobites with similar terracing features. The first photo is a hypostome, instead of the oblique angle, a direct top-down photo will assist with a confident ID. Link to comment Share on other sites More sharing options...
Clanjones Posted August 25, 2014 Author Share Posted August 25, 2014 The fossil in the top image does not have the normal "boomerang" shape of the other hypostomes I have found. Link to comment Share on other sites More sharing options...
piranha Posted August 25, 2014 Share Posted August 25, 2014 The fossil in the top image does not have the normal "boomerang" shape of the other hypostomes I have found. Isotelus has the easily recognized boomerang shape, but there are many other trilobite genera to consider. The attached chart from the Treatise is representative of the variety of different hypostome configurations. 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