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Yeah, I know I said I'd cover some
dromaeosaurids, but I'd rather wait until I get my files back to do theropod
segments. In the mean time, here's a nomen nudum
ornithischian.
"Anabisetia" Coria 1999
"A. saldiviai" Coria 1999
Cenomanian, Late Cretaceous
Huincul Member of Rio Limay Formation,
Argentina
material- (MCF-PVPH-74, 75, 76, 77) (2 m) five
individuals
Diagnosis- scapula with very strong acromion
process; flattened fifth metacarpal; preacetabular process more than 50% of
total ilial length; preacetabular process extends anteriorly past prepubic
process; ischiadic shaft proximally triangular and distally quadrangular in
cross section; tarsus with fibular-astragalar contact.
Description-
This species is known from at least five
individuals, all about two meters long.
The prepubic process is flattened. The
obturator process is placed proximally. Metatarsal I is still present with
two phalanges, one of which is an ungual.
No further description is added as all additional
released anatomical information can be found in the diagnosis and realtionships
sections and no illustrations have been published.
Relationships-
Coria places this species in the Iguanodontia based
on- dentary with parellel margins; iliac blade with sinuous dorsal margin; femur
with deep anterior intercondylar groove; a condylid slightly overlapping the
posterior intercondylar groove. He places it in the Euiguanodontia based
on- strong promary ridges on maxillary teeth; well-developed brevis shelf;
reduced metatarsal I. It is a more derived euiguanodontian than
Gasparinisaura based on- ischial shaft rounded in cross section and ischial foot
present. Whether this form is the sister group to dryomorphans, a
dryosaurid or an ankylopollexian will have to wait until the description is
published (Coria and Calvo in press).
References-
Coria, R. A., 1999. Ornithopod dinosaurs from the
Neuquén Group, Patagonia, Argentina: Phylogeny and biostratigraphy. in
Tomida, Y., Rich, T. H. & Vickers-Rich, P.,
eds., 1999. Proceedings of the Second Gondwanan Dinosaur Symposium, National
Science Museum Monographs #15, Tokyo: 47–60.
Coria and Calvo, in press. A new iguanodontian
ornithopd from Neuquen Basin, Patagonia, Argentina. Journal of Vertebrate
Paleontology.
If you want figures of "Anabisetia's" cranial and
postcranial remains, just contact me offlist and I'll tell you that none are
published yet, so you're out of luck ;-)
Mickey Mortimer
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