Re: About the Triassic...

[Justin S Tweet <thescelosaurus@juno.com>]

   Well, I don't know much about the makeup of the formation, but I can
help with its dinosaurian component.  The Santa Maria is roughly
contemporaneous with the Ischigualasto Formation, so it is probably
around 227 million years old (early to middle Carnian).  Its named
dinosaurs include:
        *Staurikosaurus pricei* (Colbert, 1970), a herrerasaurid known from a
partial skeleton ;
        *Spondylosoma absconditum* (von Huene, 1942), a possible herrerasaurid
known from fragmentary remains;
        *Saturnalia tupiniquim* (Langer, Abdala, Richter, and Benton, 1999), a
basal sauropodomorph known from three partial skeletons; and 
        *Teyuwasu barberena* (Kischalt, 1999), a dinosauriform (possibly a
coelophysoid) known from a femur and tibia.
        Dinosaurs from the roughly contemporaneous Ischigualasto Formation
include: *Herrerasaurus*, a herrerasaurid; *Eoraptor*, a very basal
theropod; and *Pisanosaurus*, a basal ornithischian.  *Guaibasaurus*, a
dinosaur of uncertain affinity from the Caturrita Formation of Brazil may
also be roughly contemporaneous.
        I hope this helps a little bit!-*Thescelosaurus*

On Wed, 25 Oct 2000 20:28:51 -0200 "Marcel Bertolucci"
<mbertol@zaz.com.br> writes:
>     Hello, to everybody!
>     I am looking for any material about the Santa Maria formation of 
> the Paraná Basin, in Rio Grande do Sul, Brazil. If anyone have any 
> material about it, please, if could send me, I'd be very grateful.
>     Thanks to everybody who can help.
> 
>                                     Marcel Bertolucci
>                                ( mbertol@zaz.com.br )
> "Dinosaurs are the most beautiful and interesting mystery I've ever 
> seen!"

------------------------------------------------------
Justin Tweet, *Thescelosaurus*
See "Thescelosaurus!": http://personal2.stthomas.edu/jstweet/index.htm

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