Tyrannosaur's teenage years makes them big
12 August 2004
by Richard
Conan-Davies
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Being a teenage Tyranosaurus rex would have meant putting on about 2.1 kg per day. This is according to the latest detailed look at the bones of one of the best preserved T-Rex dinosaurs called Sue. The research presented by Field Museum of Chicago, soon to be published in Nature , showed that there was a lot of growth activity between about 14-18 years of age and then almost no further growth. They determined the rate of growth by looking at thin sections of the rib bones of the giant dinosaur and measured the growth rings, similar to growth rings on trees. One of the researchers, Dr. Peter Makovick explained that "Knowing the lifeline is important because we now understand the evolution of T. rex's giantism, one of the most fascinating aspects of dinosaurs," |
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