Unknown Fish Fossil

A while back I was visiting my cousin Kenny and he had this fossil under the microscope. The field of view might be 4mm. It has a blue glossy sheen to it. It appears to be a fragment of a fish fossil. The fossil was found in Indian Springs Formation(?) in Crawford County, Indiana, USA. Date on this piece is Mississippian Period.

Stensioella heintzi Fish Cast Fossil

This fish fossil cast is a Stensioella heintzi (named for Erik Stensiö). It was collected Hunsrück, Budenbach, Germany. This fish fossil has only been found in Germany so far. Fossil dates to about 395 million years ago (Early Devonian Period).

The fossil on display (2018) at American Museum of Natural History, New York City, USA.

Rhabdoderma elegans Fish Fossil

This fish fossil is a Rhabdoderma elegans ("striated skin"). It was collected Linton, Ohio, USA. This fish was a common freshwater fish in its day. Fossil dates to about 325 million years ago (Middle Carboniferous Period).

The fossil on display (2018) at American Museum of Natural History, New York City, USA.