Paleontologists challenge use of bone growth rings to age crocodiles, dinosaurs

Do the bones of all Nile crocodiles have the same number of growth marks as their age? And can such growth rings be counted ...
PBS

Why Wasn't There A Second Age of Reptiles?

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Crocodiles can have extra growth cycles in a year – why this matters for estimating the age of dinosaurs

In biology and palaeontology (the study of extinct organisms) there are a few ways to estimate the age of an animal’s skeleton. One is the extent of fusion of sutures in the skeleton – how much the ...
IT-Online

UCT palaeontologists challenge how we age crocodiles and dinosaurs

Do the bones of Nile crocodiles have the same number of growth marks as their age? And can such growth rings be counted to accurately gauge the age of these reptiles? Is this also an accurate method ...

Are dinosaurs younger than we thought? Crocodile study challenges long-held age estimates

Palaeontologists have historically used the ‘one ring per year’ rule to determine the age of ancient animal life forms, similar to counting tree rings to determine tree age; however, discoveries ...
insider.si.edu

The rise of reptiles 320 million years of evolution Hans-Dieter Sues

MSRLSI copy gift of Dr. George R. Zug and signed by author VPAL copy gift of the author; signed by the author and inscribed for the NMNH Library "Over 300 million years ago, an early land vertebrate ...