Marine coprolites? Maybe?

[Kimberly C]

Hello, I find a lot of what I believe to be marine fossils from the Cretaceous period  on my land up in Grayson County, North Texas, but I am not certain what kind of fossils they are. Here are pictures of what I think are coprolites? Thank you in advance for your help in identification. 

 

[DPS Ammonite]

Welcome to the Forum Kimberly. You have pieces of oysters and or bivalves in a Cretaceous rock that is sandstone or limestone. 

 

Take a look at this geology map to see if you can find out what formation they are from. Let us know what you find out.   

https://txpub.usgs.gov/txgeology/

 

A good source of info for north Texas fossils is: http://northtexasfossils.com/

 

Also, consider joining the Dallas Paleontology Society: https://www.dallaspaleo.org/

 

[Kimberly C]

Thank you so much for your help and the excellent resources.