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RE: Rahonavis; sickle claws



At 09:35 26-11-2001 -0500, Thomas Holtz wrote:

Despite Eric's comments: yes, sickle claws evolved more than once in the
history of theropods.  _Noasaurus_ is most definitely not a maniraptoran
(bird or otherwise), and has a sickle claw.

The number of times this featured evolved within Maniraptora is uncertain.
Seriamas have it, and are derived modern birds, so this origin is separate
from any of the Mesozoic origins.

Surely you mean cassowaries, not seriemas?

Gerrit