Unidentified echinoid found in Fort Worth, Texas. It is existed in the Cretaceous Period.  My guess is it has the word aster in its name. ...

Unidentified crinoid holdfast embedded in Waldron Shale of Clark County, Indiana. Currently working with the engraver to expose more of t...

Monticulipora mammulata bryozoan fossil found in Bullitt County, Kentucky.  This colony existed in the Ordovician Period.  Next picture s...