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Re: Suspicions of Integument on Pelicanimimus After All
John Bridgman wrote-
> So far I've seen evidence (or good reason to believe) for feathery
> integument in the
> "Dave"),troodontids(Microraptor seems to share features in common with
> group,as well as the dromaeosaurs),oviraptorsaurs(Caudipteryx and
> Protarchaeopteryx as Mickey Mortimer pointed out to me),and now the
> It seems that small theropods were generally feathered,and larger ones
Pelecanimimus actually doesn't preserve (reported) integument except for the
throat pouch, which was naked. There is no evidence of feathers (Briggs et
al., 1997), contra the original description (Perez-Moreno et al., 1994).
Microraptor is more like dromaeosaurs than troodontids. Two of the
troodontid-like characters you listed are seen in birds too (maxilla
contacts naris; constricted bases of teeth), so are probably primitive for
Eumaniraptora (deinonychosaurs + birds); and another (arctometatarsus) is
seen in Sinornithosaurus. Hwang et al. (2002) code Microraptor as lacking
closely packed anterior dentary teeth.
Other feathered non-avian dinosaurs include- Hwang et al.'s in prep.
compsognathid, whatever the third "Sinosauropteryx" specimen is, Shuvuuia,
Yixianosaurus, Cryptovolans and Scansoriopteryx. Santanaraptor is naked
skinned on some areas at least.