[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Dinosaurs in Special Papers in Palaeontology No 86. Studies on Fossil Tetrapods
From: Ben Creisler
The request for the Norman article brings up a publication that apparently is
still in press. However, some information about the dinosaur papers in the
publication is available online. In some cases I could not get an abstract. So
anticipating more info in the future--and hoping the glitch between Yahoo and
the DML does not garble urls and text.....
Special Papers in Palaeontology No 86. Studies on Fossil Tetrapods
P. M. Barrett, R. J. Butler, R. J. Twitchett & S. Hutt (2011)
New material of Valdosaurus canaliculatus (Ornithischia: Ornithopoda) from the
Lower Cretaceous of southern England.
Special Papers in Palaeontology 86: 131-163
The full paper can be viewed online: (Note that this url should be a single
Rauhut, O.W.M. (2011)(in press).
Theropod dinosaurs from the Late Jurassic of Tendaguru (Tanzania).
Special Papers in Palaeontology 86.
Rayfield, E.J. (2011)
Structural performance of tetanuran theropod skulls, with emphasis on the
Megalosauridae, Spinosauridae and Carcharodontosauridae.
Special Papers in Palaeontology 86: 1-13.
Norman, D. (2011)
On the osteology of the Lower Wealden (Valanginian) ornithopod Barilium dawsoni
Special Papers in Palaeontology 86: 165-194
This contribution reviews all the material that can be assigned to Barilium
dawsoni (Lydekker). This includes the holotype, which is described in its
entirety for the first time, and a number of referred specimens. The species is
re-diagnosed on the basis o
ombinations. Barilium is a robust (c. 10 m long) styracosternan iguanodontian
ornithopod. Posterior dorsal and sacral vertebrae have tall, thick and inclined
neural spines that were flanked by a lattice of ossified tendons and their
centra bear thick keels. The ilium has a distinctive shape, and the sacrum
(comprising one sacrodorsal, five true sacrals and one sacrocaudal) is
characterized by a prominent, discontinuous midline keel. Caudal vertebrae have
1-4 slope downward, away from the sacrum, and are subrectangular; posterior
caudal centra are angular-sided and strongly amphicoelous. The forelimb has a
very robust radius and ulna that are bound firmly
together distally against a single, co-ossified carpal block.
Pronation/supination of the forelimb was controlled by motion at a synovial
joint between the proximal ends of the radius and ulna. Digit 1 of the manus is
completely fused to the carpus, and the pollex ungual is uniquely short, blunt
and laterally compressed and has a shallow vertical trough running down its
lateral surface from apex to base. Barilium was probably an obligate quadruped
and coexisted with an anatomically similar, but smaller and more lightly built,
iguanodontian (Hypselospinus fittoni). Upper Jurassic and Lower Cretaceous
iguanodontians are often represented by robust/large and gracile/small
osteological (and taxonomic) pairs. A recent review has proposed two new
taxonomic names for the material considered in this paper: a new generic name
for the holotype and a new binomial for a referred specimen (NHMUK R3788). Both
proposals are judged to be invalid: the new generic name
suggested for the holotype is a junior objective synonym of Barilium dawsoni
(Lydelcker); the criteria proposed for the recognition of a new binomial for
material herein to B. cf. dawsoni are suggested to be in error.