Fossilized tooth of Xenacanthus, measures ± 2 x 1.6 cm. It is delivered with box.
- Xenacanthiformes are an extinct order of primitive sharks. They were freshwater sharks that populated the ancient supercontinent Pangea. They developed a dorsal fin, and a serrated spine on the head directed backwards.
Permian (Arroyo Formation)
Haskeel County (Texas) USA
Reviews
There are yet no reviews for this product.
Please log in to write a review. Log in