Age of Cloverly

[jdharris@post.cis.smu.edu (Jerry D. Harris)]

Hi All -

        Can anyone tell me if there's a more recent (and detailed) dating
scheme for the Cloverly Formation of the Western US?  Is Ostrom '70 still
considered the definitive dating scheme?  All the references I can find
simply say "late Aptian-early Albian," all based on Ostrom's 1970 report,
but I'm wondering if there's a more recent publication on this subject,
maybe based on something other than vertebrates (e.g., palynomorphs, etc.).
Anyone know something I don't about this?  Thanks in advance for your
help!

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Jerry D. Harris                       (214) 768-2750
Dept. of Geological Sciences          FAX:  768-2701
Southern Methodist University
Box 750395                            jdharris@post.smu.edu
Dallas  TX  75275-0395                (Compuserve:  102354,2222)

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