Table 3. Cranial elements known for 14 allosauroid taxa.

	Monolophosaurus	Yangchuanosaurus	Sinraptor	Allosaurus	Neovenator	Eocarcharia	Tyrannotitan	Shaochilong	Acrocanthosaurus	Carcharodontosaurus	Mapusaurus	Giganotosaurus	Concavenator	Aerosteon
Premaxilla	x	x	x	x	x	-	-	-	x	-	-	x	x	-
Maxilla	x	x	x	x	x	x	-	x	x	x	x	x	x	-
Nasal	x	x	x	x	x	-	-	x	x	x	x	x	x	-
Lacrimal	x	x	x	x	-	-	-	-	x	x	x	x	x	-
Jugal	x	x	x	x	-	-	x	-	x	x	x	-	x	-
Postorbital	x	x	x	x	-	x	-	-	x	x	x	x	x	x
Quadrate	x	x	x	x	-	-	-	x	x	-	x	x	x	x
Squamosal	x	x	x	x	-	-	-	-	x	-	-	-	-	-
Quadratojugal	x	x	x	x	-	-	-	-	x	-	-	-	-	-
Parietal	x	x	x	x	-	x	-	x	x	-	-	x	?	-
Frontal	x	x	x	x	-	x	-	x	x	x	-	x	?	-
Prefrontal	x	x	x	x	-	x	-	-	x	x	x	x	?	x
Braincase	x	?	x	x	-	-	-	x	x	x	-	x	?	-
Pterygoid	?	?	x	x	-	-	-	-	x	-	-	x	x	x
Palatine	?	x	x	x	x	-	-	-	x	-	-	-	x	-
Vomer	?	?	x	x	-	-	-	-	x	-	-	-	x	-
Ectopterygoid	?	?	x	x	-	-	-	-	x	x	-	x	?	-
Epipterygoid	?	?	x	x	-	-	-	-	x	-	-	-	?	-
Articular	x	x	x	x	-	-	-	-	x	-	x	-	x	-
Surangular	x	x	x	x	-	-	-	-	x	-	x	-	x	-
Angular	x	x	x	x	-	-	-	-	x	-	-	-	-	-
Dentary	x	x	x	x	x	-	x	-	x	x	x	x	x	-
Splenial	x	x	x	x	-	-	-	-	x	-	x	-	?	-
Prearticular	x	x	x	x	-	-	-	-	x	x	x	-	?	x
Supradentary	x	x	x	x	-	-	-	-	x	-	-	-	?	-

Abbreviations: x, complete or fragmentary element present?, element present but not described; –, element not preserved.