[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Feathers for T-rex?
From: "Jaime A. Headden" <firstname.lastname@example.org>
At least basally, the tyrannosauroids should be feathered to some degree
at stage 1 or II elements. However, there is reason to suspect this was
not sustained at large size, which is coincident in extant environments
temperature-biased. Ostriches are fully "fluffed-out" at hatching, but
during maturity, their legs become almost entirely bare from ankle to hip.
Integumnet in the adult or the juvenile does not hold true during the
moult. This might be of some issue in reflecting wether or not adult
tyrannosaurids were feathered or not. The idea that the arms bore full
stage IV-V remiges is unlikely given the phylogenetic bracketing.
Not to mention the fact that, again, we have finely pebbled skin impressions
from tyrannosaurids, which argue against a fully-feathered hide in the
adults, at least.
Undergraduate Student, Carleton University
Vertebrate Paleontology & Paleoecology
AIM: jslice mallon
MSN 8 with e-mail virus protection service: 2 months FREE*