Unknown Ordovician Coral

Unknown coral found in the Grant Lake Limestone of Bullitt County, Kentucky.  It is from the Upper Ordovician Period (460-445 million years ago).

Billingsastraea yandelli Coral

Very neat coral called Billingsastraea yandelli from the Devonian Period.  It was found in the Jeffersonville Limestone of Jefferson County, Kentucky.

The holotype for this fossil is stored at The University of Michigan Museum of Paleontology which Erwin Stumm listed in 1964 as specimen #13877.  I checked and it has not been cataloged in their on-line database yet.

Thanks to my cousin for loaning it to me so it could be photographed.

Syringothyris Brachiopod

Internal cast fossil of maybe a Syringothyris sp. brachiopod found in Washington County, Indiana.  It might be from the Spickert Knob Formation (Borden Group) of the Mississippian Period.  According to the Indiana Geological Survey, this formation is wedged between the Edwardsville Formation (above) and New Providence Shale (below). The formation this fossil was found correlates to the Keokuk Limestone. Thanks to my cousin for this fossil specimen.

Identification resource used is the Indiana State Museum collections database.  In particular specimens  71.1.7234, 71.1.11021, and 71.1.11022.were used as similar fossils. Note two of the specimens were identified down to the species as Syringothyris texta.