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My thanks to Drs. Ruhe and Headden for providing the elusive reference of
the Cretaceous synsacrum. After some reading I wondered if Gargantuavis
philoinos was the only large "bird" sensu strictu that has been described
from the Mesozoic? Is there any evidence for others. Is it likely that
Western Europe did not have an Avimimid or Ornithomimid fauna in the
Cretaceous that allowed the large birds to occupy that niche normally taken
by non-avian theropods.Another matter I would appreciate clarification is as
to why the 'Struthioid' body plan was not explored before the Cretaceous
where it was independently achieved by at least 3 lines.
On an unrelated issue has there been any follow up on the deinonychosaur
like claw published by O.Rauhut from North Africa? Is it still considered to
belong to a dein..saur or is it a fragment of a Rahonavis like bird.
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