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Jeffrey A. Wilson, Paul C. Sereno, Suresh Srivastava, Devendra K. Bhatt,
Ashu Khosla, Ashok Sahni, 2003. A new abelisaurid (Dinosauria, Theropoda)
from the Lameta Formation (Cretaceous, Maastrichtian) of India.
Contributions from the Museum of Paleontology [University of Michigan]
Many isolated dinosaur bones and teeth have been recovered from Cretaceous
rocks in India, but associated remains are exceedingly rare. We report on
the discovery of associated cranial and postcranial remains of a new
abelisaurid theropod from latest Cretaceous rocks in western India. The new
taxon is characterized by exceptionally elongated supratemporal fenestrae
and a unique median nasofrontal protuberance. Postcranial elements include
vertebrae and portions of the pelvic girdle and hind limbs. The ilium, in
particular, is robustly constructed. Much of the large-bodied theropod
material collected from latest Cretaceous rocks in central and western India
may pertain to this abelisaurid. The new Indian species is more closely
allied to Majungatholus from Madagascar and Carnotaurus from South American
than to related forms on Africa. Paleobiogeographical interpretation of this
phylogenetic pattern, however, must be tempered by the lack of terrestrial
faunas of similar age on several of these landmasses: pre-Maastrichtian
Cretaceous vertebrates are virtually unknown on Madagascar and India, and
post-Cenomanian vertebrates are very poorly sampled on Africa.
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