Tetraceratops

Tetraceratops insignis ("four-horned face emblem") is an extinct synapsid from the Early Permian that may be the first known representative of Therapsida, a group that includes mammals and their close extinct relatives.[1][2] It is known from a single 90-millimetre-long (3.5 in) skull, discovered in Texas in 1908.
Category:Animals
Category:Creatures
Category:Prehistoric therapsid genera
Category:Cisuralian synapsids
Category:Cisuralian synapsids of north america
Category:Transitional fossils
Category:Fossil taxa described in 1908
Category:Reptiles