Word: pterosaurs
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Dates: during 1930-1939
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Arizona. Huge, beaked reptiles gliding on batlike wings, the pterosaurs reached their greatest size in the Chalk Age (60-130 million years ago), achieved wingspreads up to 30 feet. These hollow-boned hobgoblins weighed no more than a Thanksgiving turkey. In the older Jurassic period (130-170 million years ago) they were generally much smaller than in the Chalk Age. Digging into a desert mountain slope which once was seabottom, Dr. T. A. Stoyanow, University of Arizona geologist, laid bare a Jurassic pterosaur skeleton with a wingspread of some 28 feet, biggest specimen of that period ever found...