0.3" Dimetrodon Sail Spine Bone Fossil Permian Age Waurika Oklahoma COA, Display

Location: Ryan Formation, Waurika, Oklahoma

Weight: 0.3 Ounces

Gem Jar Dimensions: 32MM 

Spine Dimensions: 0.3 Inches Long, 0.3 Inches Wide, 0.1 Inches Thick

Comes with a free Gem Jar display.

Comes with a Certificate of Authenticity. 

The item pictured is the one you will receive. 

Dimetrodon was a prehistoric predator belonging to the group synapsids, which includes all living mammals and a diverse range of extinct animals dating back roughly 305 million years. Unlike modern mammals, non-mammalian synapsids like Dimetrodon are often mistaken for reptiles or dinosaurs, but in fact, neither synapsids nor reptiles are directly ancestral to the other. Dimetrodon went extinct about 60 million years before the first dinosaurs appeared, a time span roughly equivalent to the gap between humans and Tyrannosaurus rex.

One of the most distinctive features of Dimetrodon was its large dorsal sail, which has sparked numerous theories about its function. While some suggest it may have been used for intimidation or display, this is unlikely given Dimetrodon’s status as an apex predator. Species ranged from 1.7 to 4.6 meters (5.5 to 15 feet) in length and weighed between 30 and 250 kg (65–550 lb), preying on large amphibians like Diadectes and Eryops, which could reach up to 90 kg (200 lb).

Additionally, the sail itself was a relatively weak structure, with the upper spines embedded in soft tissue and lacking supporting muscles. This suggests that the sail was not an effective defense mechanism against predators but may have served other purposes, such as thermoregulation or species recognition.