Crocodiles can have extra growth cycles in a year – why this matters for estimating the age of dinosaurs Growth marks in bones indicate the age of some animals. But a new study leaves researchers questioning this method for dinosaurs.

#GrowthMarks inside #BoneTissues, indicates age of #animal. This method is called #skeletochronology

But a new study (where #Crocodiles were found to have extra #GrowthCycles in a year) leaves researchers questioning this method to estimate the #age of #dinosaurs
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