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I hate to play the skeptic here again, but the announcement at:
about a furcula found on a 2/3 grown _T. rex_ says that the fragment is 10.5
inches long (26.67 cm) and is 3/4 of its original size.
In Chris Brochu's monograph on FMNH PR2081, "Memoir 7, Osteology of
_Tyrannosaurus rex_: Insights from a Nearly Complete Skeleton and
Computed Tomographic Analysis of the Skull," pp. 95-96, he writes:
"The putative _T. rex_ furcula figured by Larson (2002) is furcula-like,
but is more likely homologous with the putative p23 rib and is not associated
with the appendicular skeleton."
"Based on relative size of the furcula [for FMNH PR2081] and other
postcranial elements in other tyrannosaurids, we estimate the furcula of FMNH
(whether or not this bone is a furcular fragment) to have been approximately
20 cm in length. This seems rather short, but the furculae of other
tyrannosaurids are also rather short."
So, a fragment of a "furcula" in a _T. rex_ which was not fully grown is
longer than a complete furcula would have been in a mature _T. rex_? Not even
using Jim Cunningham to do the math :), the complete furcula on the
specimen would have been 35.36 cm compared to FMNH PR2081 at 20 cm?
- Re: Furculae
- From: "TIMOTHY BRIDGEMAN" <email@example.com>