A male Psittacosaurus mongoliensis lets out a cry. Based on a skull located at NAMAL. Click image to see photograph.

A spiney-tailed Psittacosaurus wanders out of a forest onto the shore of a lake. The recent discovery of a Psittacosaurus specimen with quill-like structures at the distal portion of the tail has changed the way that we think about this animal's appearance.

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