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RE: Dinosaur diversity triggered by mountain building in Late Cretaceous North America



Cool. Reminds me of some things I have read in older (50s era) books.

-----Original Message-----
From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] On Behalf Of
Clair Ossian
Sent: Friday, August 03, 2012 7:45 AM
To: bcreisler@gmail.com; dinosaur@usc.edu
Subject: Re: Dinosaur diversity triggered by mountain building in Late
Cretaceous North America

While this paper may provide better documentation, this conclusion has been
common knowledge for decades.  I was convincingly taught this in the 1960's
and 1970's. Hmmm...

Clair Russell Ossian, Ph.D.
Professor Emeritus, Geology
Tarrant County College
2805 Raintree Drive
Carrollton, TX 75006




On 8/2/12 6:39 PM, "Ben Creisler" <bcreisler@gmail.com> wrote:

> From: Ben Creisler
> bcreisler@gmail.com
> 
> New in PLoS ONE:
> 
> Terry A. Gates, Albert Prieto-Márquez & Lindsay E. Zanno (2012)
> Mountain Building Triggered Late Cretaceous North American
> Megaherbivore Dinosaur Radiation.
> PLoS ONE 7(8): e42135
> doi:10.1371/journal.pone.0042135
> http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0042135
> 
> 
> Prior studies of Mesozoic biodiversity document a diversity peak for
> dinosaur species in the Campanian stage of the Late Cretaceous, yet
> have failed to provide explicit causal mechanisms. We provide evidence
> that a marked increase in North American dinosaur biodiversity can be
> attributed to dynamic orogenic episodes within the Western Interior
> Basin (WIB). Detailed fossil occurrences document an association
> between the shift from Sevier-style, latitudinally arrayed basins to
> smaller Laramide-style, longitudinally arrayed basins and a well
> substantiated decreased geographic range/increased taxonomic diversity
> of megaherbivorous dinosaur species. Dispersal-vicariance analysis
> demonstrates that the nearly identical biogeographic histories of the
> megaherbivorous dinosaur clades Ceratopsidae and Hadrosauridae are
> attributable to rapid diversification events within restricted basins
> and that isolation events are contemporaneous with known tectonic
> activity in the region. SymmeTREE analysis indicates that
> megaherbivorous dinosaur clades exhibited significant variation in
> diversification rates throughout the Late Cretaceous. Phylogenetic
> divergence estimates of fossil clades offer a new lower boundary on
> Laramide surficial deformation that precedes estimates based on
> sedimentological data alone.