Activity Christopher Evans posted an image in the group What is it? from the myFOSSIL app 4 months ago 4 months ago 4 months ago Can someone help me identify what these are? Dewald du Plessis replied 4 months ago Crinoid stem segments MacKenzie Smith replied 4 months ago @christopher-evans @dewald-duplessis These are mineralogical in nature. These are hexagonal. Crinoids are either round or pentagonal.