Strophodonta Brachiopod from Wisconsin

This is an updated posting of a fossil I have already listed. It is a Strophodonta brachiopod fossil found in the Milwaukee Formation of Wisconsin. It is from the Middle Devonian Period.

The fossil has now been cleaned to reveal more of its detail including a coral colony (possibly some sort of Aulopora). The matrix was a little stubborn and it took some time to remove it. I think the canister was refilled three times before I finished working on it. Some the fossil may have been removed by me exposing the surface too long to the sand stream. As you can see from the image below the matrix is a light gray while the fossil is a dark blue-gray color.

Here are some close up images of the coral colony. They were photographed wet since it tends to reveal more of the coral detail.

Thanks to Nathan for this fossil and Kenny for letting me use his sand blasting apparatus.

Spirifer Brachiopod Fossil

Brachiopod fossil this might be a Spirifer sp. found in Milwaukee County, Wisconsin, USA. This brachiopod looks a lot like those found in southern Indiana in the Jeffersonville Limestone called Orthospirifer sp. The Indiana fossil tends to be more gray though.
The Spirifer sp. exist in the Milwaukee Formation with is dated to the Middle Devonian Period.
Thanks to Nathan for the fossil.

Pentamerus Brachiopod Mold

There are some molds of a Pentamerus sp. brachiopod fossil found in Fond du Lac County, Wisconsin, USA. For some reason we I see these types of fossils, I think of a pig's hoof. These fossils date to the Silurian Period. A very nice write up on these types of fossils can be found on the Wooster Geologists Blog. Thanks to Nathan for the fossil.

Strophodonta Brachiopod

A Strophodonta brachiopod fossil found in the Milwaukee Formation of Wisconsin. This fossil needs to be cleaned as it has some interesting rings on its surface. This might be some sort of coral colony that was growing there or it could be some scattered crinoid rings.
Thanks to Nathan for this fossil.

Bumastus Ioxus Trilobite Cephalon

Here is the mold of a Bumastus ioxus trilobite fossil cephalon found in the Racine Formation middle Silurian Period. It was found in Milwaukee County, Wisconsin, USA. Thanks to Nathan for the fossil.

Calymene celebra Fossil

This Silurian fossil is a Calymene celebra. It was found in the Racine Formation of Milwaukee County, Wisconsin. Such nice preservation and it reminds of trilobites found in the dolomite around Bardstown, Kentucky.
Thanks to Nathan for the fossil.