Silurian Black Snails

For your visual inspection, here are two snail fossils that appear to now consist of pyrite.  Found in the Silurian period Louisville Limestone, they might be some sort of Loxonema.  Henry Nettelroth (1835-1887) in his 1889 Kentucky Fossil Shells book lists a Loxonema laeviusculum (Hall, 1879) which looks similar.

Images taken with a microscope set to 23x and an 8 mm FOV.  I was looking for graptolites but found these fossils instead.

Invertrypa Brachiopod

This brachiopod fossil from Middle Devonian Period (about 390 million years ago). Fossil was found near Louisville Kentucky, USA. Brachiopod is an Invertrypa sp. from Jeffersonville Limestone of Clark County, Indiana.

Florissant Plant Fossils

Recently, my cousin returned from Florissant, Colorado with this fossil plate from the late Eocene Epoch Florissant Formation as a gift.  As best I can tell the first fossil shown is a leaf of maybe a Fagopsis or Cedrelospermum.

The next picture appears to be a piece of white cedar (Chamaecyparis) tree. Thanks again to Kenny for the gift.