Post Oak Creek, Sherman Texas

[PesiMs]

 

shark teeth, left corner is a couple of ptychodus teeth, a black,  tiny gastropod.  I think on the right are just brown concretions.  Below is a large view of bivales. Gryphea at top left a clump of gryphea top right.  There's an ammonite tucked in there on the bottom right. 

At the top gryphea. Others are various bivalves. A black gastropod toward the middle. The brown peanut thing is a concretion.