there are remains of keratin sheaths of the spikes and of keratin, non-bony, scales, in the form of a black film. The specimen is, as of 2017, the most complete ankylosaur find from the Judith River Formation. It was also the first North American ankylosaur specimen with well-preserved material from both the skull and tail.

Description

Zuul is estimated to have been 6 m long. The describing authors of Zuul, Victoria Arbour and David Evans,

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