These images appear to show fossilized discoidal dasycladacean alga called  Receptaculites subturbinatus . It was found in the Waldron Sh...

These images are of the brachiopod fossil  Acanthothiris spinosa  (Schlotheim). It was found in the Salperton Limestone, Upper Inferior O...

This fossil was found in the Waldron Shale of Clark County, Indiana USA. It appears to be a Desmograptus micronematodes graptolite. The ...