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RE: Arizona T-rex Museum Questions and eggs
I believe you are referring to _Macroelongatoolithus xixiaensis_. Although
first considered a therizinosaurid, the associated embryo, "Baby Louie," has
since been identified as a giant oviraptorid. See
Dino Guy Ralph
Docent at the California Academy of Sciences
Dinosaur and Fossil Education
Member of the Society of Vertebrate Paleontology
From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] On Behalf Of
Sent: Tuesday, December 12, 2006 2:29 AM
Subject: RE: Arizona T-rex Museum Questions and eggs
The accompanying text with the Macroolithus nest on the Black Hills
"This egg nest is a composite (made from more than one individual),
containing some of the largest theropod (meat eating) dinosaur eggs found to
date. Two complete, nearly intact egg nests of this size and type have been
excavated in China. This reconstruction was produced using casts of many
individual eggs and groups of eggs, collected from the extensive red
sandstone beds in the Xixia Basin of Henan Province in east-central China.
Notice the "pairing" of the eggs in the nest. This "pairing" suggests that
these dinosaurs had paired oviducts, laying two eggs at a time, and all
their eggs in one sitting. This nest is of the size and appearance that
Tyrannosaurus rex may have laid.
Age Late Cretaceous
Locality Shiguo Formation, Xixia Basin, Henan Province, China
Size approximately 2.15m (7 feet) in diameter.
T-rex (or Tarbosaurus)? It has at times been mentioned as being
therizinosaurid, or dromaeosaurid.
Van: Botterweg, Rrp
Verzonden: di 12-12-2006 11:27
Onderwerp: RE: Arizona T-rex Museum Questions and eggs
With regard to tyrannosaur or other theropod eggs:
the large cylindrical eggs that have been found in Mongolia and China, some
up to 45 cm (18 inches) long, that are known as oogenus Macroolithus, are
these known to be tyrannosaurid, or dromaeosaurid, or anything else?
If you google (google.images) for "Macroolithus", you get some very nice
pictures, some of a (or composite of two) very large complete nest (over 7
feet in diameter) with some 2 dozen eggs, found in China some years ago.
Particulary, the Black Hills Institute has some nice replicas. I remember
this was also featured in national Geographic. Nice! But is enough known to
'diagnose' the taxon?
Van: William Olewiler [mailto:email@example.com]
Verzonden: ma 11-12-2006 3:25
Onderwerp: RE: Arizona T-rex Museum Questions
The sign in the background of the "egg" picture says, "These two eggs were
found in China." The right-hand portion of the sign is out of the picture.
Peace and grace,
Bill Olewiler + OSL
Pastor, Mt. Moriah United Methodist Church
White Hall, VA <"}}}<
.... And all manner of things will be well (Julian of Norwich)
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