#allosaurinae

[lauras-happy-place]

The famous specimen of Allosaurus known as 'Big Al' (MOR 693), the holotype of A. jimmadseni. 'Big Al' was found near Shell, Wyoming, in 1991, and preserves an exceptional 95% of the skeleton.

Allosaurus jimmadseni

('different reptile, for Jim Madsen')

Allosauridae Allosaurinae

Morrison Formation, Wyoming, USA.

Allosaurus is also represented by the far more common type species, A. fragilis ('fragile'); Morrison Formation, Colorado, Montana, New Mexico, Oklahoma, South Dakota, Utah, Wyoming, USA;

and a delicious European flavour called A. europaeus; Lourinhã Formation, Portugal.

Upper Jurassic, ~155 - 145 Ma.

~

Image from WitmerLab at Ohio University.

Holotype skull of Allosaurus jimmadseni (MOR 693), 'Big Al'. Photo from WitmerLab.

Daily Dino Fact #25

[lambskinrug]

Allosaurus