|Named By:||Matthew in 1908|
|Time Period:||Leonardian stage, 275 Ma|
|Size:||Skull is 9 centimetres long. Total body length unknown due to lack of fossil material|
|Classification:||| Chordata | Synapsida | Tetraceratopsidae ||
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. It is known from a single 90 mm (3.5 in) long skull, discovered in Texas in 1908.