Platyceras and Acanthocrinus Fossilized Spines

This piece of Devonian Period limestone is from the Jeffersonville layer of Clark County, Indiana. It is unique in that it contains spines from two types of creatures: snail and crinoid. The solid spines are from the Acanthocrinus or Gilbertocrinus while the hollow ones might be from the Platyceras snail.

Thanks to Kenny for the picture.

Flexicalymene meeki Trilobite Fossils

Enrolled Flexicalymene meeki trilobite fossils found in Franklin County, Indiana. These creatures scurried along the sea floor back in the Ordovician Period.

My cousin Kenny found all these in one day which makes that a GREAT fossil day! Thanks to my cousin for the picture.

Fisherites Chlorophytes Fossil

These pictures show a fossil of calcareous green algae (chlorophytes) from the Ordovician Period. They are called Fisherites sp. of the order Dasyclads and family Receptaculites. The fossil was found in the Galena Formation of Minnesota.   Second picture shows a cross section of the fossil.
Thanks to Herb for the images.