Here is a wonderful complete MUCROSPIRIFER brachiopod that is free from matrix but the matrix block it came from comes with the brachiopod.
The Devonian Silica Shale from Lucas County in Northwestern Ohio at one time produced some MUCROSPIRIFERS however with the closing of quarries they have become VERY scarce. The shells are covered by iron pyrite – fools gold which makes them very attractive to look at. They generally average around 1 to 2 inches long. There are also many other species of brachiopod found in those sediments also pyritized.
Mucrospirifers are brachiopods reaching a maximum of 2 inches in length. It is believed to have inhabited shallow mudflats. Sitting on its pedicle valve it was a filter feeder.
This is a wonderfully somewhat not totally pyritized MUCROSPIRIFER though the pictures do not do it justice.
They are no longer readily available as the quarries have shut down or have denied access due to regulations. It is still possible to purchase these in local rock shops and rarely at rock shows.
This MUCROSPIRIFER is 1 1/2 inches long at the base by 3/4 inch tall. The brachiopod fits nicely into the space it occupied. Can be displayed with or without the matrix block. The block is an irregularly shaped roughly triangular 2 3/4 inches by 2 1/2 inches..
This is the specimen you will receive, and again pictures do not do these pyritized brachs justice.