A schematic picture of how the models were designed using SUE as an example. (Top)The scanned skeleton is "straightened" to make it symmetrical, which…Read More »
simplifies modeling of body cross-sections. (Middle) A body volume is wrapped around the skeleton. (Bottom) Body volumes were modeled at three different levels of fleshiness, from skinny (olive) to obese (grey).
The correct mass estimate is assumed to lie between these extremes, the researchers say.
A comparison of the fleshed-out models of the largest T. rex, named SUE, and the smallest (a juvenile named Jane) specimens represent the two extremes…Read More »
of the size spectrum that scientists used to estimate the mass of T. rex. (A human figure is shown for scale.) These are scientific models constructed for calculation of physical properties and are therefore not embellished with aesthetic details, the researchers say.
Here a fleshed-out reconstruction of the meat-eater T. rex reveals its bulky rear end and tail muscles, based on previous research.
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Credit: Erica Lyn Schmidt.
Researchers investigating Jane, the prized juvenile T. rex at the Burpee Museum of Natural History in Rockford, Ill., discovered she received a serious…Read More »
bite that punctured her left upper jaw and snout in four places. As severe as it was, the injury wasn't life threatening and eventually healed over, although it left its mark. The bite marks, described in 2009 in the journal Palaios, were oblong and matched up with the shape of other teen tyrannosaurs, suggesting juvenile T. rexes might have bitten each other in fights. [Read full story]