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Re: Tyrannosaurid ontogeny
Sam Barnett wrote on 12/09/1999
A quote from the Tinker website:
"We don't know how Tinker died though we hope to find out. Maybe Tinker was
killed by a pack of Nanotyrannus (Nano's were probably cousins of T-rexes);
many shed Nano teeth were found with Tinker's body.Nano teeth are sharper and
more delicate than rex teeth. Did they kill Tinker, or just feast on a
convenient food source? We'll let you know what we find, as we find it."
Hmmm... Nanotyrannus teeth in a Tyrannosaurus nest - Wouldn't a more
parsimonious sequence of events be that half-sized Juvenile Tyrannosaurus
rexes had baby teeth and sometime between then and three-quarter sized
development, the full adult teeth kick in? The site even mentioned the fact
that crocodile babies have needle teeth while the adults do not, yet did not
ultimately come to this conclusion. Is there some piece of information about
this new find that I've missed?
Could this help to clarify the status of Nanotyrannus as a genus different
from T. rex? If there are two different kinds of teeth ("baby teeth" and
tyrannosaurus like teeth) found in the size range of Nanotyrannus, wouldn't
it show, that Nanotyrannus is a valid genus?
And what about asian tyrannosaurids like T. efremovi? Is something known
about their teeth?
Perhaps somebody can help and thank you in advance.
Greeting from a rainy Germany
Heinz Peter Bredow