Trimerorhachis Teeth Fossil Permian Age Reptile Waurika Oklahoma COA, Display

Location: Ryan Formation, Waurika, Oklahoma

Weight: 0.3 Ounces

Gem Jar Dimensions: 32MM 

Comes with a free Gem Jar display.

Comes with a Certificate of Authenticity. 

The item pictured is the one you will receive. 

Trimerorhachis

In the waterways of the Permian world, Trimerorhachis moved quietly along the bottoms of lakes and rivers, hunting in shallow freshwater environments. Growing up to about a meter long, this amphibian had a broad triangular head with eyes positioned upward — perfect for watching for prey while lying in wait beneath the surface.

Unlike amphibians that split their lives between land and water, Trimerorhachis appears to have remained highly aquatic. Fossils show evidence of external gills, similar to those seen in modern axolotls, suggesting it breathed and fed much like today’s aquatic salamanders. Its short limbs and elongated body further emphasize its adaptation for swimming rather than walking.

Covering its body was a remarkable layer of thin, overlapping osteoderms that formed a protective armor, especially around the tail. These bony plates may also have added weight, helping the animal stay close to the bottom where it could hunt effectively. Trimerorhachis offers a fascinating glimpse into the diversity of early amphibian life long before modern ecosystems took shape.