Tuesday, March 29, 2011
Presented for your visual inspection, a Devonian hash plate from the Silver Creek Limestone of Clark County Indiana. An intact Tentaculites with a lot of Devonochonetes brachiopods.
The Tentaculites is an extinct molluscs that lived in the Devonian and Silurian. The ringed cone like shell is known as a conch. Study of Devonian pyrite specimens from Germany alludes to the creature having tentacles. So maybe they were like miniature shelled squids. The next image shows the Tentaculites being about 1 cm in length.
Learn more about Tentaculitoids in the 1996 book Fossils of Ohio, Chapter 20 (pp.282-287) written by Stig M. Bergström.
This fossil is available for purchase on eBay CLICK LINK HERE.
On one side of this limestone block, is a cross section of a brachiopod with calcite crystals.
On the bottom of the plate are more remains of brachiopods plus this pygidium of a trilobite. More that like it belonged to a Phacops.
View of top of plate:
View of bottom of plate:
View of one of the sides: