Jump to content

Trilobite IDs from somewhere in the midwest


Fissiletag

Recommended Posts

I recently bought a bunch of trilobites from an old collection. The seller didn't have much information on the trilobites besides them originating somewhere in the midwest. (He bought the fossils as part of a collection). I'm wondering if anyone recognized the possible formation they could have originated from and the IDs of the trilobites? 

 

Here are the photos:

IMG_6133 2.jpg

IMG_6134 2.jpg

IMG_6135 2.jpg

IMG_6136 2.jpg

IMG_6137 2.jpg

IMG_6138 2.jpg

IMG_6140 2.jpg

IMG_6141 2.jpg

IMG_6142 2.jpg

  • Enjoyed 2
Link to comment
Share on other sites

Definitely middle/upper Ordovician. Could have come from a lot of places though. If these were all collected from the same formation, the Maquoketa Formation would be a reasonable guess. But even then, could have come from MO, IA, MN, etc.

  • Thank You 1
Link to comment
Share on other sites

I agree they look like Ordovician. Photos 3 and 5 looks like Bumastoides. Photo 8 looks like a Calymenid. The rest look like some sort of Illaenus.

  • Thank You 1
  • I Agree 1
Link to comment
Share on other sites

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 account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...