Re : Danish Dinosaur Data Discovered: dumb question

[Tim Williams <twilliams_alpha@hotmail.com>]

Aegyptiacus@aol.com wrote:


> excuse my ignorance, I thought Ankylosaurs were more or less cretaceous. 
> How can an ankylosaur print date from 170 mya (is that middle Jurassic 
> Bathonian/Bajocian)?

Ankylosaurs (or putative ankylosaurs) are known from the Middle Jurassic: 
_Sarcolestes leedsi_ (Callovian) and _Tianchiasaurus nedegoapeferkima_ 
(Bathonian/Bajocian).

Several ankylosaur genera are known from the Late Jurassic, including 
_Mymoorapelta_ and _Gargoyleosaurus_ from the Morrison Formation, and some 
poorly known European taxa such as _Cryptosaurus_ (unnecessarily renamed 
_Cryptodraco_), _Priodontognathus_ and _Dracopelta_.


Tim

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