Posts Tagged ‘Ordovician’

Mary Mae’s Fossils

Thursday, December 20th, 2012

A Cigar Box of Fossils

In the photograph at left are fossils like the ones Mary Mae digs up in the book.  The ones in the first two rows were actually found by my brother-in-law at Caesar Creek State Park and are from the Ordovician period, around 450 million years ago.

The three in the first row are bryozoans.  In the second row, left to right, are a brachiopod, the tip of a cephalopod’s tentacle, another brachiopod, then a horned coral.  The two on the top are a crinoid and a trilobite, which I made myself out of clay for the book trailer.  If you click at the box on the right, you can watch the book trailer and see those two clay models in Mary Mae’s hand.

The Cincinnati Arch

Sunday, July 4th, 2010

Diagram of the Cincinnati Arch

Mary Mae learns about the Cincinnati Arch from her fifth grade teacher in Mary Mae and the Gospel Truth.   Here we see how the Ordovician strata is exposed.  This is the strata on which the city of Cincinnati rests.  It was once a warm, shallow sea basin, filled with trilobites and other sea life, but as continents shifted, the land was forced up.  Now we have access to the fossils of that period, which ordinarily would be buried.

If you click on the diagram you can make it bigger.