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Now that I have the URL for the 2003 SVP Abstract Volume, I can refer
interested parties to the abstract by Pinegar et al., "A juvenile allosaur
with preserved integument from the basal Morrison Formation of central
Wyoming," on pp. 87A/87B. Please note that if you wish to print this page
out you will need to specify pp. 89-90 during printer setup.
Quoting the abstract:
"The left side of the body preserves a 30 cm squared skin impression
consisting of small scales 2-3 mm in diameter. This suggests that juvenile
allosaurs possessed scaly integument. This represents the most derived
tetanuran to retain this character, otherwise present in more basal
theropods such as _Carnotaurus_."
Actually, given a length estimate of 4 meters for the allosaur, _Allosaurus
sp._, 30 sq. cm. isn't all that much skin.
"Dino Guy" Ralph W. Miller III
Docent at the California Academy of Sciences
proud member of the Society of Vertebrate Paleontology