This dinosaur species replaced its teeth every two months: Study

A carnivorous disaur that lived about 70 million years ago replaced all its teeth every two months or so, revealed a recent study. study that was published in Plos One journal said that disaur named Majungasaurus grew new teeth every couple of months. It also revealed that that animal that lived in Magascar grew its teeth two to 13 times faster than rates estimated in or carnivorous disaurs.

Probably gnawed bones

A team of researchers from US claimed that this species of disaurs were wearing down teeth very fast and speculated that prehistoric animals gnawed bones. team which also included scientists from elphi University in US used a collection of isolated fossil teeth to examine microscopic growth lines in teeth of disaurs. y found growth lines similar to tree rings. However, an intriguing discovery was me — inste of being deposited once a year, y were deposited daily. scientists also conducted a  computerised tomography (CT), an X-ray based scan, on intact jaws to visualise unerupted teeth deep inside bones of species helping m in estimating tooth-replacement rates in a large number of individual jaws. 

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study’s co-author,  Michael D. D'Emic from elphi University, said that re is independent evidence for this in form of scratches and gouges that match spacing and size of ir teeth on a variety of bones - bones from animals that would have been ir prey. He furr said that disaur probably gnawed on bones to ingest certain nutrients, a behaviour that is observed in modern-day rodents. swift growth of teeth puts Majungasaurus in same category as sharks and big, herbivorous disaurs.   Majungasaurus did t have exceptionally strong teeth required to gnaw on bones. D'Emic ded that it was re working hyposis for why y h such elevated rates of replacement.

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