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Re: Rodents gnawing dino bones



>From: bk090@freenet.carleton.ca (David Brez Carlisle)
 > 1
 > The late Cretaceous bone beds in Dinosaur P rovincial Park,
 > Alberta, Canada contain far more mammalian teeth than dino remains.
 > That's in terms of numbers, not mass.  All these teeth are adapted
 > for insectivory, and the best guess is that they represent the 
 > remains of Insectivora, the only extant order of mammals that
 > originated before the Tertiary. 

All of the *therian* mammalian teeth were adapted to insectivory.

But there are also many multituberculate teeth from that age. These
animals were close ecological analogs of the rodents, even down to
the buck teeth.
 > 
 > To e xpect to find dino bones gnawed by rodents is thus almost as
 > unlikely as finding a stone spear point  in a dino skeleton.  Dinos
 > and rodents just did not co-exist.

True, but multituberculates and dinosaurs *did* coexist.  And the
ecological simlarities suggests that there would have been other
behavioral similarities.

swf@elsegundoca.attgis.com              sarima@netcom.com

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