ROM-42190 is an osteoderm
being almost spherical in shape and exhibiting a micropitted bone surface (Fig.
"In this case, we're very lucky in that it's not just the bones; we have all of the armour, the osteoderm
is preserved, we also have all the skin preserved and it is in three dimensions."
The prenarial portion of the cranium of a slendersnouted phytosaur (YPM VPPU 007920), with an associated osteoderm
and bone fragments, was found by PEO, Bob Salvia and A.
Then we assigned each isolated osteoderm
to one of the six regions using as criteria its symmetry, dimensions, texture, and thickness (Gillette and Ray, 1981; Castro-Azuara, 1997).
On display is an osteoderm
, or bony skin growth, of a Titanosaur, part of a sauroped group that reached the largest sizes and lived between 65,000,000 and 71,000,000 years ago.
: CFM-960, 972, 1774, 1912, 1913, 1916 and 1923 among others, display particular characteristics found in Gavialosuchus like: absence of the spine or dorsal ridge and the presence of holes distributed more or less in a radial way in the osteoderms
with an oval pattern and random way in a rectangular osteoderm
Strahm and Schwartz (1977) primarily used a new character, the development of the osteoderm
canal system, to characterize the two nominal genera.
The only identified marine turtle bone came from XU8B--an osteoderm
(upper carapace or plastron) fragment weighing 21.2 g and representing 1.7% of the total bone assemblage by weight.
morphology in recent and fossil Euphractinae Xenarthrans.
Vickaryous M, Hall B (2004) Comparative study of osteoderm
development in Alligator mississippiensis and Dasypus novemcinetus.
The anterior ventral element associated with TMM 40146-6 bears a single row of large pits immediately posterior to a broad, flat region that would have passed dorsal to the osteoderm
immediately in front of it.
(2009): The titanosaur (Dinosauria: Sauropoda) osteoderm
record: review and first definitive specimen from India.