Petalodus ohioensis
306.95 – 300.2 MYA
Scientific Classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Chondrichthyes
Order:
Petalodontiformes
Family:
Petalodontidae
Genus:
Petalodus
Species:
ohioensis
Safford 1853
Catalog Number: CG-0102
A quick post as this specimen has much more work needed done before I can do a full write up. In the local stream there is a junction where two streams meet and turn into one. A piece of loose limestone, laying in the stream bed, was easily split. It had been saturated for quite some time and was full of fossils. Progressively making it smaller, I revealed the labial side of the specimen. I have not found a new Petalodus tooth since the specimen I found in the Pine Creek Limestone.
This side was a silver color. In trying to cleave the rock to a smaller size for transport, one quarter of the left labial side broke off. This same action also freed the remaining crown. I brought these two pieces and the mold back. The corner is going to be difficult to remove without breaking it. If I can manage to remove it, then I can glue it back to the larger piece.
Unique to the fourteenth tooth
One unique feature is the apex of the crown. Instead of coming to a clean angle, the apex comes up at a slightly sharper angle. The lingual side of the tooth is more brown color compared to the other side. The root did not appear easy to obtain.
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Additional photos of Petalodus ohioensis XIV.
I will post additional photos in the future. The plan is to reattach the left labial side. I need to spent some time figuring out how to remove it from the matrix.
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Further Reading for Petalodus Ohioensis
- Petalodus Research – Fossils of Parks Township.