[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Coelurus a maniraptoran (for how long?)
David Marjanovic wrote-
> Depends on whether Dendroolithidae or some Elongatoolithidae
> (*Macroolithus*, whatever) are segnosaur eggs (both have been suggested).
> the former are, then it's difficult to put them inside Coelurosauria,
> IMHO... dendroolithid eggshell is dinosauroid-spherulitic, like that of
> sauropod and hadrosaur eggs, apparently it's the plesiomorphy.
Segnosaur eggs are dendroolithid, as shown by a recent abstract on embryonic
segnosaur parabasicranial morphology. More on that later tonight.... I
don't see why eggshell morphology couldn't have reversed as easily as any
other morphological character, so I don't think this is a blow to their
status as coelurosaurians.