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 was a semi-aquatic temnospondyl amphibian that lived during the Permian Period and is known for its distinctive body shape and aquatic adaptations. The largest individuals are estimated to have reached nearly one meter in length, making it a medium-sized predator within ancient freshwater ecosystems. Its broad, triangular skull and forward-positioned, upward-facing eyes suggest an ambush hunting lifestyle similar to many modern aquatic predators.

The body of Trimerorhachis was elongated with relatively short limbs, indicating that it spent much of its time in the water rather than on land. Fossil evidence of a branchial apparatus suggests that it retained external gills throughout life, resembling modern salamanders such as the axolotl. This adaptation indicates a strong dependence on aquatic habitats such as lakes and slow-moving rivers.

One of its most remarkable features was the presence of thin, overlapping osteoderms covering the body. These small bony plates, sometimes layered up to twenty deep, formed protective armor, especially around the tail. The additional weight of this armor may have helped Trimerorhachis sink to the bottom of waterways, where it likely fed on small aquatic prey.