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Dinosaurs!....pretty much all the dinosaurs ever discovered....give or take a couple of bones.

Dinosaurs!....pretty much all the dinosaurs ever discovered....give or take a couple of bones.

Prehistoric giant flightless bird | Image linked from: http://getouterspace.tumblr.com/post/25857819106 ...

Prehistoric giant flightless bird | Image linked from: http://getouterspace.tumblr.com/post/25857819106 ...

Depictions of prehistoric animals by Dutch brothers Alfons and Adrie Kennis. Beautiful textures, shapes, backgrounds.

Depictions of prehistoric animals by Dutch brothers Alfons and Adrie Kennis. Beautiful textures, shapes, backgrounds.

The Helicoprion is said to have lived during the Carboniferous period and was one of the few creatures able to live through the Permian-Triassic extinction event (‘The Great Dying’). Eventually the Helicoprion went extinct during the Triassic period. The creature had teeth that are very much like a circular saw. It had so many teeth because as new teeth grew, the older teeth were pushed out and into the middle to create the spiral. Length-wise the creature was said to be 10-15 feet.

Top 10 Bizarre Prehistoric Animals

The Helicoprion is said to have lived during the Carboniferous period and was one of the few creatures able to live through the Permian-Triassic extinction event (‘The Great Dying’). Eventually the Helicoprion went extinct during the Triassic period. The creature had teeth that are very much like a circular saw. It had so many teeth because as new teeth grew, the older teeth were pushed out and into the middle to create the spiral. Length-wise the creature was said to be 10-15 feet.

Brachiosaurus; Late Jurassic (154-153 Ma); Discovered by Riggs, 1903; Artwork by Charles R. Knight; Note: Probably not the correct habitat.

Brachiosaurus; Late Jurassic (154-153 Ma); Discovered by Riggs, 1903; Artwork by Charles R. Knight; Note: Probably not the correct habitat.

The Prehistoric Animal Alphabet - I wish this were a print - D would love it!

The Prehistoric Animal Alphabet

National Dinosaur Museum | Palaeontologist Paul Sereno compares a human skull with that of a Carcharodontosaurus, a Spinosaurus and a Tyrannosaurus.

National Dinosaur Museum | Palaeontologist Paul Sereno compares a human skull with that of a Carcharodontosaurus, a Spinosaurus and a Tyrannosaurus.

More horny dinos. Did I just say that? I did not just say that...

More horny dinos. Did I just say that? I did not just say that...

A gigantic feathered dinosaur from the Lower Cretaceous of China http://www.xinglida.net/Yutyrannus/Yutyrannus.htm

A gigantic feathered dinosaur from the Lower Cretaceous of China http://www.xinglida.net/Yutyrannus/Yutyrannus.htm