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Animals | Extinct Animals | Late Cretaceous Dinosaurs

A period of great transformation, the Late Cretaceous Period is when the dinosaurs disappeared from the earth. Learn more about the Late Cretaceous dinosaurs that existed during this era, such as the Tyrannosaurus, Gallimimus, and Brachylophosaurus.

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Gallimimus

Gallimimus ("chicken mimic") was the largest of the ornithomimids (the "ostrich dinosaurs") known. It has been found only in the Late Cretaceous Nemegt Formation of Mongolia. Learn more about the Gallimimus and other Late Cretaceous dinosaurs.


Could you really outrun a Tyrannosaurus rex?

 Could you really outrun a Tyrannosaurus rex?

OK, hop in your time machine, find a T. rex and challenge it to a race. Who'd win? Find out if you could outrun a Tyrannosaurus rex at HowStuffWorks. See more »

The Ultimate T. Rex Behavior Quiz

 The Ultimate T. Rex Behavior Quiz

Curious about how the fearsome Tryannosaurus rex lived and behaved? Take our quiz and learn more about Tyrannosaurus rex behavior. See more »

Late Cretaceous Period

Late Cretaceous Period

The Late Cretaceous Period, an era of great transformation, is when the dinosaurs disappeared from the earth. Learn more about the Late Cretaceous Era. See more »

Abelisaurus

 Abelisaurus

The dinosaur Abelisaurus was discovered in Patagonia is argentina. Learn about the Abelisaurus, Late Cretaceous dinosaurs and dinosaurs of all eras. See more »

Albertosaurus

 Albertosaurus

Albertosaurus was an older cousin to the Tyrannosaurus. Learn more about the Albertosaurus, Late Cretaceous dinosaurs and dinosaurs of all eras. See more »

Anchiceratops

 Anchiceratops

Anchiceratops was discovered along the Red Deer River in Alberta in 1912. Learn more about the Anchiceratops and Late Cretaceous Dinosaurs. See more »

Ankylosaurus

 Ankylosaurus

Ankylosaurus is one of the best-known dinosaurs. Learn more about the Anchiceratops, Late Cretaceous dinosaurs and dinosaurs of all eras. See more »

Anserimimus

 Anserimimus

The ornithomimid is anserimimus, has the name goose mimic. Learn more about the Anserimimus, Late Cretaceous dinosaurs and dinosaurs of all eras. See more »

Antarctosaurus

 Antarctosaurus

Antarctosaurus was a sauropod of spectacular proportions. Learn more about the Antarctosaurus, Late Cretaceous dinosaurs and dinosaurs of all eras. See more »

Aralosaurus

 Aralosaurus

Aralosaurus is from Kazakhstan, part of the former Soviet Union. Learn more about the Aralosaurus, Late Cretaceous dinosaurs and dinosaurs of all eras. See more »