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NOVA scienceNOW: T. rex
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Program Overview
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Scientists have gained new insights into the lifespan of Tyrannosaurus
rex (T. rex) and how T. rex grew to be so large.
This NOVA scienceNOW segment:
reports that scientists typically find the age of dinosaurs and many
other animals by counting growth rings in certain bones. describes how Dr. Greg Erickson analyzed T. rex's bones and
unexpectedly found distinct lines that appeared to be growth rings. reveals how Erickson determined that T. rex grew from a 10-pound
hatchling to a 12,000-pound giant over 20 years, with most of the growth
occurring between the ages of 14 and 18. concludes that 25 to 30 years old was considered old age for a T.
rex.
Taping Rights: Can be used up to one year after the program is taped off the air.
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