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Re: Morrison Formation Tyrannosaurid

To: jschneiderman@revelation.unomaha.edu, dinosaur@usc.edu
Subject: Re: Morrison Formation Tyrannosaurid
From: tsg94001@uconnvm.uconn.edu
Date: Thu, 11 Feb 1999 11:00:15 -0500
Reply-to: tsg94001@uconnvm.uconn.edu
Sender: owner-dinosaur@usc.edu

>I have heard of allosaurids from the Morrison reaching the size of a
>tyrannosaurids, but no actual member of the tyrannosauridae in Late
>Jurassic deposits.

I thought George had answered this one.  _Stokesosaurus_ of the Morrison
Formation of Utah (Cleveland-Lloyd Quarry I believe) is a possible
tyrannosaurid.  Madsen thought _Stokesosaurus_ was a tyrannosaurid back in
1974 based upon the design of the ilium.  More recently (1998) Dan Chure
tentatively referred to _Stokesosaurus_ a partial braincase from the same
locality which is strikingly tyrannosaurid-like (UUVP 2455).

TJW

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