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RE: Yixian Trees
I wonder how secure that date is? Some Chinese paleos once considered the
typical Yixian outcrops as Late Jurassic under out-of-date
stratigraphic considerations, but these same sites were later securely shown to
be Early Cretaceous.
Thomas R. Holtz, Jr.
Email: firstname.lastname@example.org Phone: 301-405-4084
Office: Centreville 1216
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
Faculty Director, Science & Global Change Program, College Park Scholars
Mailing Address: Thomas R. Holtz, Jr.
Department of Geology
Building 237, Room 1117
University of Maryland
College Park, MD 20742 USA
> -----Original Message-----
> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu]
> On Behalf Of Ben Creisler
> Sent: Wednesday, August 01, 2012 3:55 PM
> To: email@example.com
> Subject: Re: Yixian Trees
> From: Ben Creisler
> Unfortunately, the fossil log in this photo is said to come
> from the Late Jurassic in Yixian, not the Early Cretaceous.
> However, it does give a diameter of 1.5 to 1.9 meters.
> Clearly big trees existed earlier.