JurassicCarnivoreLarge
Allosaurus
AL-oh-SORE-us
"Different lizard"
Overview
Allosaurus was the apex predator of Late Jurassic North America. A large, powerful theropod with sharp, serrated teeth and strong clawed arms, it hunted the giant sauropods of its time and likely scavenged as well.
Vital Statistics
Length
9.5 m
Height
3.5 m
Weight
2 t
Est. Speed
30 km/h
Discovered
1877
Named by
Othniel Charles Marsh
Countries Discovered
United StatesPortugal
Fossil Locations
Leaflet © OpenStreetMap
📍 Morrison Formation, Colorado📍 Cleveland-Lloyd Quarry, Utah
Interesting Facts
Allosaurus is the most common large theropod found in the Cleveland-Lloyd Dinosaur Quarry.
Its skull was lightly built, with gaps that reduced weight while maintaining strength.
It could open its jaws extraordinarily wide, up to 92 degrees.
Allosaurus likely preyed upon Stegosaurus and juvenile sauropods.
Closest Relatives
SaurophaganaxCeratosaurusTorvosaurusCarcharodontosaurus