Liaoningosaurus paradoxus poster Size:18×24 the spiky-headed ceratopsian dinosaur from

the spiky-headed ceratopsian dinosaur from the Cretaceous Period

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The strangely-shaped burrows were previously believed to be freshwater sponges or some kind of vegetation

if it looks like an armadillo and quite possibly digs like one

Siderops was a large temnospondyl amphibian from the Early Jurassic of Australia

Liaoningosaurus paradoxus poster Size:18×24 the spiky-headed ceratopsian dinosaur fromThis Chinese dinosaur is a relative of the armored dinosaur Ankylosaurus from North America. Unlike its heavy duty cousin, fossils suggest that it was probably semi aquatic, giving the animal a "paradox" status.