Fossil Reptile Tracks- Pre-Dinosaur- Arizona Sandstone

Pricing & History

Sold for
Start Free Trial or Sign In to see what it's worth.
Sold Date
Source eBay

is some pertinent information about Permian tracks and track ways in Coconino Sandstone from the Ashfork, Arizona area.The fossilized remains of these animals have never been recovered. The tracks themselves have been identified as Cheilichnus, (Laporus is synonymous) a track made by a quadrupedal Tetrapod. Tracks are categorized by size. T are three in the Coconino, Ch. Gigas, Ch. Duncani (the most common), and Ch. Bucklandi. This animal is thought to be a Synapsid, a mammal-like reptile that walked with it's legs directly under it's body. This lifted the tail off the ground, leaving few tail drag marks in the sand. The Permian Coconino was a vast sand dune environment shared by countless creatures such as other species of reptiles, and various species of invertebrate insects. Other reptiles include the Dolichopldichnus, a lizard that was believed to have been a bi-ped while running. Insect tracks that have been found are species of spiders, scorpions, centipedes, as well as others. Tracks vary in quality. This may be due to the moisture content of the sand at the time the imprint was made. Light moisture created weak tracks and very wet sand made muddled or elongated prints. These fossils come in layers many feet thick. It is believed the tracks were impressed, then covered with dry sand, making new areas for fresh tracks on the read more

Items in the Price Guide are obtained exclusively from licensors and partners solely for our members’ research needs.

Flag item for content or copyright

If this item contains incorrect or inappropriate information please contact us here to flag it for review.

If you are the originator/copyright holder of this photo/item and would prefer it be excluded from our community, contact us here for removal.