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New Triassic sauropod from Thailand



As promised (see
http://www.cmnh.org/fun/dinosaur-archive/2000Sep/msg00093.html), at least
one of the list of new taxa that Mike de Sosa asked about
(http://www.cmnh.org/fun/dinosaur-archive/2000Sep/msg00082.html) is now
published:

Buffetaut, E., V. Suteethorn, G. Cuny, H. Tong, J. Le Loeuff, S. Khansubha &
S. Jongautchariyakul. 2000.  The earliest known sauropod dinosaur. Nature
407: 72-74.

Describes _Isanosaurus attavipachi_ (after Isan, local name for northeaster
Thailand, and P. Attavipach, former Director General of the Thai Dept. of
Mineral Resources) from the Nam Phong Fm. (either late Norian or Rhaetian,
so Late Triassic).  A cervical, dorsal, six caudals, neural arch of a
posterior dorsal, two chevrons, fragments of ribs, right sternal plate,
scapula, and femur are known.

Although no phylogenetic analysis is done here, it is considered a very
basal sauropod.  Femur is 65 cm long, suggesting a 6.5 m long animal: lack
of neruocentral fusion suggests that it wasn't fully grown.

                Thomas R. Holtz, Jr.
                Vertebrate Paleontologist
Department of Geology           Director, Earth, Life & Time Program
University of Maryland          College Park Scholars
                College Park, MD  20742
http://www.geol.umd.edu/~tholtz/tholtz.htm
http://www.geol.umd.edu/~jmerck/eltsite
Phone:  301-405-4084    Email:  tholtz@geol.umd.edu
Fax (Geol):  301-314-9661       Fax (CPS-ELT): 301-405-0796