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Re: Geological periods

From: Thomas_R_HOLTZ@umail.umd.edu (th81)
 > Dilophosaurus is definitely Early Jurassic: the Kayenta Formation contains
 > Early J taxa of all sorts. 

The Kayenta Formation is one of the ones that used to be considered
Late Triassic, and was subsequently re-evaluted, based on faunistic
correlations.

Thus *older* references to Dilophosaurus will site it as Triassic,
but any recent one will correctly assign it to the Early Jurassic.

[Check Colbert's books from the 60's to see what I mean].

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

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