Devonian Arthrodire

If you opened this drawer at the Cincinnati Museum paleontology collection center, and asked me what this was, I would have no answer.

Luckily, the curator was there and she told us it was a Devonian Period arthrodire (armored fish). They make great displays once there in 3-D form (http://www.palaeocritti.com/dunkleosteus-terrelli). I believe there is one in the lobby at the Falls of the Ohio State Park visitor center.

If I had to guess, this fossil probably came from the Cleveland Shale (member of Ohio Shale). It is probably a Dunkleosteus.

Unknown Trilobite Pygidiums

Pictures of trilobite pygidiums stored at the Cincinnati Museum. At least one is from the Devonian Period.

Dalmanites purduei

This picture is of a cast of a trilobite found in Tennessee. It is stored at the Cincinnati Museum. The original fossil must have been 20 cm in length. The label called it Dalamanites cf. purduei from the Ross Limestone member. It existed in the Lower Devonian Period.