Indiana Silurian Period Fossils

This first fossil is a Platyostoma niagarense gastropod fossil from the Waldron Shale of Clark County, Indiana.  The creature existed in the Middle Silurian Period.  It is quite small at about 1 cm wide.

Next fossil I think is some sort of cystoid from the Waldron Shale. It has a four petal flower shape at its base? There are also five petal patterns on its surface.  Needs cleaning with air abrasion to reveal better surface detail.  Fossil is small at just over 1 cm long.

Last Waldron Shale fossil is odd shaped.  Sort of reminds me of an echinoid spine but I don't think those were around in the Middle Silurian Period.  Might be some sort algae but the pores do not look big enough.  The Indiana State Museum collection database has a Waldron Shale algae fossil specimen cataloged as a Receptaculites sp.

The fossil could be some sort of bryozoan in weird shape.  Fossil is over 1 cm long.

Lewis and Clark Park

View of the Ohio River from Lewis and Clark Park in Clarksville, Indiana.  The park is next to the Falls of the Ohio State Park with its large fossil beds.

Stigmaria Fossil

Stigmaria ficoides? plant fossil found in Hazard, Kentucky. Fossil root of some sort of lycopsid tree. The plant grew in the Middle? Pennsylvanian Period in the Breathitt Group.

This fossil is interesting in that it can be split apart and inner root details can be seen.

Surface pattern up close view.  Thanks to Herb for letting me photograph his fossil.