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SuperCroc is the largest crocodilian ever discovered. Its skull alone was six feet long. Based on skull and bone measurements and comparisons with modern crocs, it grew to between 37 and 40 feet and weighed up to 17,500 pounds. Growth lines in cross sections of the two rows of 35 armored plates along its-neck, back and tail put its minimum life span at 50 to 60 years.

SuperCroc is the largest crocodilian ever discovered. Its skull alone was six feet long. Based on skull and bone measurements and comparisons with modern crocs, it grew to between 37 and 40 feet and weighed up to pounds.

Eotriceratops has one of the largest skull of any ceratopsian (horned dinosaur) known. It belongs to the same family as Triceratops, but lived earlier in time, about 68 million years ago.

Eotriceratops has one of the largest skull of any ceratopsian (horned dinosaur) known. It belongs to the same family as Triceratops, but lived earlier in time, about 68 million years ago.

Bison latifrons - ice age bison twice as large as modern bison with longhorn-type horns.

I would have a ranch full of them. bison latifrons - ice age bison twice as large as modern bison with longhorn-type horns.

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

pretty much all the dinosaurs ever discovered.give or take a couple of bones. Triceratops is my favorite!

The Giant Beaver lived in North America but went extinct during the last Ice Age, 10,000 years ago.

Castoroides (giant beaver), lived in North America during the Pleistocene.

Skull of Barbourofelis, extinct carnivorous mammals which lived during the Miocene (15 to 6 mio years ago) in North America. The appearance of this predator reminded very much the saber-toothed tigers. The structure of the barbourofelis was very strong: it might look like a lion with the physique of a bear or a bear with the head of a lion.

Skull of Barbourofelis, extinct carnivorous mammals which lived during the Miocene to 6 mio years ago) in North America. For a parallel evolution phenomenon, the appearance of this predator reminded very much the saber-toothed tigers.

Thalassomedon, a plesiosaur - Late Cretaceous, North America

Thalassomedon, a plesiosaur - Late Cretaceous, North America

Sarcosuchus Imperator. "Supercroc" skull replica.

Comparison of extinct Sarcosuchus (Super Croc) & Homo Sapiens full-scale skulls.

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