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Re: earliest herbivore
All I had about pisanosaurus was (Norman again, tho other books have similar
The earliest ornithopod (possibly a heterodontosaurid) is claimed to be an
animal named pasanosaurus...from the late triassic of Argentina. However, the
very fragmentary remains of this animal do not make it clear even if it is an
ornithischian, let alone an ornithopod, so we should perhaps note the
existence of this fossil and hope that more material is discovered that will
prove exactly what sort of animal this is.
The section (Fabrosaurids & Heterodontosaurids) goes on to discuss
lesothosaurus australis approvingly. This dates from the upper triassic and
that brings them in range of the anchisaurs. Anchisaur remains have also been
found in Africa in 'the earliest Jurassic rocks'. I also notice that the
anchisaur discussed by BettyC is described as Triassic (the one found in
Branford). So, is the story better known now than in my sources (I hope)?