The Trujillo Formation is a geologic formation in Texas and New Mexico. It preserves fossils dating back to the upper Triassic period. It is also known as the Trujillo Sandstone.
Typothorax is an extinct genus of typothoracine aetosaur that lived in the Late Triassic. Its remains have been found in North America. Two species are known: T. coccinarum, the type species, and T. a
Trujillo Formation
…system. The lower beds at Palo Duro Canyon contain unusual cone-shaped iron concretions that likely formed in the vadose zone. The formation contains Typothorax scutes and the unusual cycad Sanmiguelia. The formation was first named as the upper formation of the Dockum Group in 1907 by C.N. Gould…