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Koreanosaurus, new burrowing ornithopod
From: Ben Creisler
In case this advance online paper has not been mentioned
Min Huh, Dae-Gil Lee, Jung-Kyun Kim, Jong-Deock Lim, and
Pascal Godefroit (2010).
A new basal ornithopod dinosaur from the Upper Cretaceous
of South Korea.
Neues Jahrbuch für Geologie und Paläontologie -
Abhandlungen (advance online publication)
The Seonso Conglomerate (?Santonian ? Campanian, Late
Cretacous) of Boseong site 5 (southern coast of Korean
Peninsula) has yielded well-preserved postcranial
material belonging to a new taxon of ornithischian
dinosaur, Koreanosaurus boseongensis nov. gen., nov. sp.
This dinosaur is characterized by elongated neck
vertebrae, very long and massive scapulocoracoid and
humerus, proportionally short hindlimbs with a low
hindlimb ratio for tibia/femur, and anteroposteriorly-
elongated femoral head forming an obtuse 135° angle with
the femoral shaft. Koreanosaurus displays a series of
neornithischian synapomorphies. Amongst Neornithischia,
most features of the postcranial skeleton suggest
affinities with basal ornithopods and, amongst them,
particularly with a small clade formed by three genera
from the Cretaceous of Montana: Zephyrosaurus schaffi,
Orodromeus makelai, and Oryctodromeus cubicularis.
According to the morphological, phylogenetic,
sedimentological, and taphonomic data at hand, it is
tentatively postulated that Koreanosaurus was a burrowing
dinosaur, like Oryctodromeus.