Free Republic 3rd Qtr 2025 Fundraising Target: $81,000 Receipts & Pledges to-date: $12,863
15%  
Woo hoo!! And now less than $100 to reach 16%!! Thank you all very much!! God bless.

Keyword: paleonambla

Brevity: Headers | « Text »
  • Ancient Flying Reptiles Likely Had Sex As Youths

    03/13/2008 4:54:07 AM PDT · by Renfield · 33 replies · 552+ views
    National Geographic News ^ | 3/12/2008 | John Roach
    Pterosaurs, like their dinosaur relatives, didn't wait until they were fully grown to have sex, a new study suggests. Researchers examined microscopic tree ring-like growth markings in hundreds of bones from a species of the extinct flying reptiles discovered in central Argentina in the 1990s. The Pterodaustro guiñazui bones came from multiple individuals, including an embryo inside an egg and adults with wingspans between 1 to 8 feet (0.3 to 2.5 meters). P. guiñazui lived during the mid-Cretaceous, about a hundred million years ago. "It is quite amazing that even after millions of years, the microscopic structure of the bone...