Description

Early Permian
Arroyo Formation
Haskell county, TX, USA
0.6 inch toe bone. Pes phalanx 1, digit I
Synapsid,

Here’s a toe bone from a lesser-known relative of Dimetrodon.  The Early Permian was a time when complex ecosystems on land were becoming established and when world climates were trending warmer and drier, favoring plants like gymnosperms and animals like reptiles and synapsids.