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.

Kingena wacoensis Brachiopod

Here are some pictures of some Kingena (Waconella) wacoensis brachiopod fossils. These fossils were found in the Main Street Limestone of Denton County, Texas. They are dated to the Cretaceous Period.

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.