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Convergent Evolution in Aquatic Tetrapods: Insights from an Exceptional Fossil Mosasaur
This study demonstrates that a streamlined body plan and crescent-shaped caudal fin were already well established in Platecarpus, a taxon that preceded Plotosaurus by 20 million years, and expands the understanding of convergent evolution among marine reptiles, and provides insights into their evolution's tempo and mode.
A review of the Upper Cretaceous marine reptiles from Japan
New Exceptional Specimens of Prognathodon overtoni (Squamata, Mosasauridae) from the Upper Campanian of Alberta, Canada, and the Systematics and Ecology of the Genus
ABSTRACT Currently known from the early Campanian to late Maastrichtian, Prognathodon constitutes a group of mosasaurine mosasaurs that typically possessed massive jaws. Only four articulated skulls…
Platecarpus Tympaniticus (Squamata, Mosasauridae): Osteology of an Exceptionally Preserved Specimen and Its Insights Into the Acquisition of a Streamlined Body Shape in Mosasaurs
It is concluded that both an anterior migration of the rib cage and an increasing regionalization within the dorsal vertebral series are key features contributing to formation of a streamlined body profile in P. tympaniticus, and probably in many other hydropedal members of mosasaurs.
Two New Plioplatecarpine (Squamata, Mosasauridae) Genera from the Upper Cretaceous of North America, and a Global Phylogenetic Analysis of Plioplatecarpines
The current study recognizes 11 species within seven genera to constitute the Plioplatecarpinae, with as many as 17 unequivocal character changes support the clade comprising the three post-middle Campanian Plioplatedcarpus species.
A Small, Exquisitely Preserved Specimen of Mosasaurus missouriensis (Squamata, Mosasauridae) from the Upper Campanian of the Bearpaw Formation, Western Canada, and the First Stomach Contents for the…
A new, exquisitely preserved specimen of a small mosasaur, referable to Mosasaurus missouriensis, is reported from the Bearpaw Formation of southern Alberta, Canada, and it is hypothesized that coexistence of these apex predators in theBearpaw Sea was possible because of niche partitioning.
A new halisaurine mosasaur (Squamata: Halisaurinae) from Japan: the first record in the western Pacific realm and the first documented insights into binocular vision in mosasaurs
A specimen of a halisaurine mosasaur is reported from Japan for the first time, closing the pre-existing biogeographical gap between the Middle East and the eastern Pacific. Phosphorosaurus…
NEW SPECIMENS OF PLATECARPUS PLANIFRONS (COPE, 1874) (SQUAMATA: MOSASAURIDAE) AND A REVISED TAXONOMY OF THE GENUS
The unexpected preservation of paired septomaxillae and the presence of a clear and well-defined vomer-pterygoid contact in UALVP 24240 are reported, allowing re-evaluation of the species composition of the genus.
TAXONOMIC RE-ASSIGNMENT OF THE FIRST-KNOWN MOSASAUR SPECIMEN FROM JAPAN, AND A DISCUSSION OF CIRCUM-PACIFIC MOSASAUR PALEOBIOGEOGRAPHY
Obata and colleagues (1972) reported on the first known fossil remains of a mosasaur (Squamata; Mosasauridae) from Japan. At the time of the report, the specimen (NSM-PV15003) was not completely…
New Material of the Mosasaur Plioplatecarpus nichollsae Cuthbertson et al., 2007, Clarifies Problematic Features of the Holotype Specimen
Re-characterization of the species indicates its closest anatomical resemblance to descriptions given for the contemporary Platecarpus somenensis specimens (lower middle Campanian) from North America, which indicates that the current generic assignment for the latter taxon needs to be re-evaluated.