Silurian Cephalopod Fossil Dawsonoceras

This fossil appears to be a Dawsonoceras americanum cephalopod. It was found the Osgood Formation at Napoleon Quarry in Ripley County Indiana USA. It dates to the Silurian Period.

Used The Silurian Fauna of Kentucky by August F. Foerste for a list of fossils found in the Osgood Formation to narrow down the species. It can be found at http://www.uky.edu/OtherOrgs/KPS/poky/files/pokych03-01-46.pdf

Venericardia planicosta Pelecypod Fossil

This bivalve fossil was found in Monroeville, Monroe County, Alabama in the Gosport Sand Formation.  It existed in the Eocene Epoch of the Paleogene Period. The fossil appears to be a Venericardia planicosta (Lamarck 1801).  It is extra nice in that both halves are present. I still need to clean this fossil. Thanks to Herb & Pam for the fossil.

Identification based on plate 167 figure 22 of Index Fossils of North America (Shimer & Shrock, 1944).

Busycon rucksorum Gastropod Fossil

This posts shows some images of a snail fossil (appears to be Busycon rucksorum Petuch 1994) of the Fort Drum Member, Nashua Formation of Ruck's Pit in Okeechobee County, Florida, USA. This animal lived in the Calabrian Stage (780,000 years ago to 1.8 million years ago) of the Pleistocene Epoch of the Quaternary Period.

Thanks to Mary Ann for giving me this fossil so many years ago.