Orthostrophia fornacula? with Lophophore

An Orthostrophia fornacula? brachiopod named by paleontologist James Hall of New York.  Fossil found in the Jeffersonville Limestone of Clark County, Indiana.  Specimen dates to the Middle Devonian Period.  The white coiled tube visible in images is the lophophore.  Fossil is 4.6 cm long, 3.8 wide, and 3.2 cm tall.  Weight is 37.7 g.

Learn more about the area's brachiopods from this Indiana State Parks document.

Quartz Lophophore

A brachiopod lophophore fossilized in quartz crystals.  The brachiopod is a Pseudoatrypa found in the Jeffersonville Limestone of Clark County, Indiana.  The creature existed in the Middle Devonian Period.

Kona Dolomite

Kona Dolomite dated to over 2 billion years old.  Thought to be a cyanobacteria colony (stromatolite).  Found in the Kona Hills of Marquette County, Michigan.  These early oxygen producers paved the way for more advanced lifeforms of the future.

This specimen has finally been polished and buffed (thanks Kenny) after I cut it with the diamond saw and smoothed it with high grit sandpaper.  It is destine for the education collection of a local public institution.