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

The prehistoric amphibian Trimerorhachis is known from Permian fossil deposits and represents a fascinating example of early aquatic vertebrate evolution. Some specimens suggest adults reached lengths of up to 3.3 feet, making them relatively large amphibians for their time. Its skull was broad and triangular, with eyes positioned high on the head, an adaptation that allowed it to observe its surroundings while remaining mostly hidden underwater.

Trimerorhachis had an elongated torso and short limbs, indicating that swimming was its primary mode of movement. Fossil evidence of a branchial apparatus suggests the presence of external gills, revealing a life cycle closely tied to water. This trait places it among neotenic amphibians, retaining juvenile characteristics into adulthood.

A defining feature of Trimerorhachis was its extensive covering of small, thin osteoderms. These overlapping bony plates formed multiple layers across the body and tail, offering protection and likely adding weight that helped the animal stay close to the bottom while hunting.