The shark tooth, Petalodus ohioensis, is the most common vertebrate fossil found locally. I have collected twelve specimens from the Brush Creek Limestone and one from the Pine Creek Limestone. I have a comprehensive live research article in general on the entire genus, Petalodus, available on this website. Click toRead More →

Petalodus ohioensis from the Pine Creek Limestone

This is the first specimen of Petalodus ohioensis I have recovered from Pine Creek Limestone. Specimens of Petalodus can be found in marine zones throughout the Glenshaw Formation, so finding one here is no surprise. However through several trips to the locality, which is around 10 miles North East fromRead More →

Petalodus ohioensis

This specimen is lower crowned than recent ones collected. It is also heavily covered in a white substance that may be mineral aragonite or something else. This being my 11th tooth specimen, I may start reporting on these in groups. The bottom right of the below photo has a pieceRead More →

Petalodus ohioensis

Petalodus ohioensis tooth number 10 is a beautiful specimen. It’s well shaped, well colored and has a solid root. I worked the specimen with an air scribe for some time, removing matrix from a perimeter slowly, before uncovering the tooth itself. Air scribes are useful but troublesome to work with.Read More →

Petalodus tooth cutting edge

A quick accidental find tonight. I stack fossil pieces all over the place. This particular piece has been out in the weather all Winter. The tip of a Petalodus Tooth blade attached to the rock. Upon examining the specimen under the microscope, it found it to be removable. With aRead More →

Petalodus Tooth

One large piece of limestone needed broken into two or three pieces to haul back. With one crack of the 16lb sledge hammer, a chunk of limestone separated and exposed this very nice Petalodus tooth. This particular tooth specimen sets a few firsts. It’s the widest tooth I’ve found atRead More →

Petalodus Tooth in Brush Creek Limestone

Yesterday I discovered a first local Petalodus tooth that was removable from the matrix. It’s the first time I’ve been able to examine one in three dimensions easily. I was not aware of how flat one side is compared to the other. There is a root, however it became detachedRead More →

Petalodus Tooth

In going back to the area where I typically find Petalodus teeth, I have several pieces of limestone separated out to look for. In searching, I found another tooth. However upon closer inspection I figured out that I had found the other side of tooth no. 6. Petalodus CatalogRead More →