Friday, April 18, 2014

Dolatocrinus triangulatus? Crinoid Calyx Fossil

This appears to be a Dolatocrinus triangulatus? crinoid calyx fossil. It was found in the Thunder Bay Formation of Alpena Michigan, USA. It dates to the Middle Devonian Period (Erian).

Learn more at the michiganbasinfossils.org web site.

Thanks to Mary Ann for letting me take some pictures of this fine specimen.







Thursday, April 17, 2014

Orthospirifer Lophophore Brachiopod Fossil

This fossil is a great example of the brachiopod lophophore feeding tubes preserved in a white quartz form. This brachiopod appears to be some sort of Orthospirifer. It was found in the Sellersburg Limestone that formed in the Middle Devonian Period (Eifelian).

Thanks to Mary Ann for letting me take some pictures of it.