Red Beds of Texas and Oklahoma

[2] Fossil remains of many Permian tetrapods (four-limbed vertebrates) have been found in the Red Beds, including those of Dimetrodon, Edaphosaurus, Seymouria, Platyhystrix, and Eryops.

[12] The Wichita Group contains some of the richest fossil deposits in the red beds, including the Geraldine Bonebed in Archer County.

[1] From youngest to oldest: In 1877, Edward Drinker Cope was the first paleontologist to study the red beds in search of fossils.

[2] Cope employed collectors to aid him in his search for bones, including Swiss botanist Jacob Boll.

[6] After Cope, paleontologists such as Ermine Cowles Case[13] and Alfred Romer[14] found rich deposits of Permian-era tetrapods.

The most prolific fossil site in the red beds is the Geraldine Bonebed within the Nocona Formation of the Wichita Group.

[6] The Geraldine Bonebed is most famous as a prolific source of temnospondyls, synapsids, basal reptiliomorphs and reptiles, including partial and complete skeletons of Archeria, Eryops, Edaphosaurus, Dimetrodon, Bolosaurus, Trimerorhachis, Zatrachys, and Ophiacodon.