.71" Fossil Shark (Xenacanthus) Tooth - Texas

This is a .71" wide tooth of the shark genus Xenacanthus, collected from the Early Permian, Wolfcampian Series (280 - 299 Million Years Ago) of Texas. The root of this tooth is complete and the serrations are still present along some of the cusp edges.

Xenacanthus is a genus of extinct freshwater shark that lived between the Devonian and Triassic periods. Their distinguishing features include v shaped teeth, a ribbon-like dorsal fin and a large spine that protruded from the back of their head. It has been speculated that the spine had venomous properties, similar to that of a stingray spine. Fossil records indicate that their maximum length was around 4 feet. Due to the shark being primarily cartilage, most fossils of this shark are isolated teeth and spines, however some locations feature soft body preservation.
DETAILS
SPECIES
Xenacanthus sp.
LOCATION
Texas
SIZE
.71" longest measurment
ITEM
#136332
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