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Re: Triassic Sauropods

This dating is based only on the faunal composition, right? Could it be
that Madagascar, then as now, preserved forms which had gone extinct on
the mainland? (Or was it an island at all back then?)

Madagascar was nicely sandwiched between Africa and India at the time. For excellent paleogeographic reconstructions, see Chris Scotese's site at http://www.scotese.com/earth.htm. Other nice ones (that aren't cluttered by outlines of modern landmasses) can be found at http://vishnu.glg.nau.edu/rcb/paleogeographic.html.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jerry D. Harris
Dept of Earth & Environmental Science
University of Pennsylvania
240 S 33rd St
Philadelphia PA  19104-6316
Phone: (215) 573-8373
Fax: (215) 898-0964
E-mail: jdharris@sas.upenn.edu
and     dinogami@hotmail.com
http://www.sas.upenn.edu/~jdharris

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