Coprolite from a Tetrapod.
Matrix free coprolite. Could be from the Amphibians, Eryops or Diadectes. Alternatively from the Pelecosaurs ('sail backed' Reptiles) Dimetrodon or Edaphosaurus. Nice example.
Permian, Texas Red Beds.
Central Texas, USA.
Coprolite : 3.5 cm.
