Allosauroidea

Allosauroidea Temporal range: Middle Jurassic–Late Cretaceous, PreꞒ Ꞓ O S D C P T J K Pg N
Allosaurus jimmadseni specimen
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	Theropoda
Infraorder:	†Carnosauria
Superfamily:	†Allosauroidea Marsh, 1878
Type species
†Allosaurus fragilis Marsh, 1877
Subgroups
†Asfaltovenator †Erectopus †Lourinhanosaurus? †Monolophosaurus? †Xuanhanosaurus? †Metriacanthosauridae †Piatnitzkysauridae? †Allosauria †Allosauridae †Carcharodontosauria †Datanglong? †Lusovenator †Siamraptor †Carcharodontosauridae †Neovenatoridae †Chilantaisaurus? †Neovenator †Siats?

Allosauroidea were a clade of theropod dinosaurs. The oldest-known allosauroid, Shidaisaurus, appeared in the early Middle Jurassic (probably Bajocian stage) of China. The last known surviving members of the group died out around 90 million years ago in Asia (Shaochilong) and South America (Mapusaurus), Allosauroids had long, narrow skulls, large orbits, three-fingered hands, and usually had "horns" on their heads. The most famous and best understood allosauroid is the Allosaurus.

References

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