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RE: The New Paper at the End of the Universe (Was: Hitchhiker's New Papers to the Galaxy)
> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu]
> On Behalf Of Mike Taylor
> Sent: Wednesday, August 15, 2007 7:21 AM
> To: email@example.com
> Cc: DINOSAUR Mailing List
> Subject: The New Paper at the End of the Universe (Was:
> Hitchhiker's New Papers to the Galaxy)
> Jerry D. Harris writes:
> > Hi All -
> > Before we get to the juicy stuff, here's some new things:
> > [snip]
> But, Jerry, you missed the highlight: a new, and
> well-represented brachiosaurid!
> Rose, Peter J. 2007. A new titanosauriform sauropod
> (Dinosauria: Saurischia) from the Early Cretaceous of central
> Texas and its phylogenetic relationships. Palaeontologia
> Electronica 10 (2): 8A.
> A collection of primitive titanosauriform sauropods from the
> Jones Ranch locality, Early Cretaceous Twin Mountains
> Formation (~112 Ma), central Texas, represents one of the
> richest accumulations of sauropod bones in North America.
> Autapomorphic characters of the taxon include cranial and
> mid-caudal neural arches with distinct intraprezygapophyseal
> laminae (tprl), accessory vertebral laminae on cranial dorsal
> neural arches, and dorsal neural spines that lack a postspinal lamina.
> Non-vertebral skeletal elements referred to the genus
> Pleurocoelus from the Arundel Formation of Maryland and
> Virginia possess some diagnostic morphological
> characteristics and can be compared with the Jones Ranch
> sauropod. The latter differs from Pleurocoelus in the shape
> of the caudoventral margin of the maxilla, the shape of the
> distal scapular blade, and the shape of the proximal condyle
> of the tibia. The Jones Ranch sauropod is also
> morphologically distinct from all other sauropods described
> and named from the Early Cretaceous of North America.
> Cladistic analysis places this sauropod within
> Titanosauriformes. The Texas sauropod does not possess
> synapomorphies of Somphospondyli, and derived characters that
> have been used to define the Titanosauria are also absent,
> affirming its placement as a basal titanosauriform. The new
> taxon from Texas is known from more material than any other
> North American Early Cretaceous sauropod. Description of the
> taxon increases the diversity of sauropods in North America
> during the Early Cretaceous and provides more complete,
> associated material that can be compared to new discoveries
> from this time period.
Mike didn't mention that the taxon in question (the infamous "Texas
Pleurocoelus" material) is now given a name:
Paluxysaurus jonesi, after Paluxy, Texas and William R. (Bill) Jones (the
man whose land the specimens come from).
Thomas R. Holtz, Jr.
Email: firstname.lastname@example.org Phone: 301-405-4084
Office: Centreville 1216
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
Faculty Director, Earth, Life & Time Program, College Park Scholars
Mailing Address: Thomas R. Holtz, Jr.
Department of Geology
Building 237, Room 1117
University of Maryland
College Park, MD 20742 USA