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

Trimerorhachis is a genus of temnospondyl amphibians known from Permian-age deposits, representing a specialized aquatic form adapted to freshwater habitats. The estimated maximum body length approached one meter, with anatomical features suggesting a predominantly benthic lifestyle. The cranial morphology includes a broad triangular skull and dorsally oriented orbits near the anterior region, consistent with ambush predation in shallow water environments.

Postcranial anatomy reveals an elongated body and reduced limb proportions, indicating limited terrestrial mobility. The presence of a preserved branchial apparatus suggests neotenic retention of external gills into adulthood, paralleling developmental patterns seen in extant amphibians such as the axolotl. This trait supports interpretations of a fully aquatic mode of life.

Trimerorhachis possessed numerous thin osteoderms arranged in overlapping layers, sometimes reaching up to twenty strata in certain body regions. These dermal ossifications likely provided both protection and ballast, facilitating bottom-dwelling behavior in lakes and river systems while stabilizing the animal during feeding.