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Pachyrhinosaurus

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Pachyrhinosaurus

Meaning: Thick-nosed lizard

Period: 73 to 69 Million Years Ago, Cretaceous period

Discovered: North America; Alaska, USA and Alberta, Canada

Length: 20 feet

Weight: 2 to 3 tons

Diet: Plant eater

A Dino That Behaved Like a Rhino

Pachyrhinosaurus may have used the bony growth, or boss, on its nose to butt other herd members for dominance and mating – like a rhino. The function of the neck frill and horns is unknown.

Pachyrhinosaurus used its strong cheek teeth to chomp on tough fibrous plants and its sharp beak to slice vegetation. Packed tightly together to form a cutting surface, its teeth were continually replaced by new ones – just like shark’s teeth. This adaptation made it a more efficient feeder.

This dinosaur lived on the tundra and may have migrated south during the winter months. Similar to other herding animals today, fossils indicate that the adults and juveniles stayed together, protecting their young within a herd – just as zebras do today.


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