1) Middle Jurassic extinction
Found on
https://www.crosswordclues.com/clue/amphitheriida
Amphitheriida is an order of mesozoic mammals restricted to the Middle Jurassic of Britain. They were closely related to the Dryolestids but possessed five molars instead of the usual four in Dryolestida, (with the exception of the family Dryolestidae whose members possessed between 8 and 9 molars). The Amphitheriida contains one family, the Amphi...
Found on
http://en.wikipedia.org/wiki/Amphitheriida
No exact match found.
