Perhaps it had not. The creature was a recently hatched Desert Horned Lizard (Phrynosoma platyrhinos). The relatively large spines that are large and sharp on the head of an adult horned lizard ...
Its scientific name translates as the “polar bear lizard.” If Nanuqsaurus hoglundi ... evolved in the Amazon rainforest or Sahara desert. This applies to tyrannosaurs, too.
The big monsters are the appeal of the Monster ... To be more specific, Tracktail Lizards can be found in the desert sections of the Windward Plains, and are most often found in a pair together.