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A Cladistic Analysis and Taxonomic Revision of the Plesiosauria (Reptilia: Sauropterygia)
The Plesiosauria (Reptilia: Sauropterygia) is a group of Mesozoic marine reptiles known from abundant material, with specimens described from all continents. The group originated very near theExpand
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Morphologic and Ontogenetic Patterns in Elasmosaur Neck Length, with Comments on the Taxonomic Utility of Neck Length Variables
Elasmosaur cervical vertebrae are common fossils, but their taxonomic utility is limited due to a lack of understanding concerning their shape within and among taxa. In this paper, we analyze dataExpand
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Cranial Anatomy and Taxonomy of Dolichorhynchops Bonneri New Combination, a Polycotylid (Sauropterygia: Plesiosauria) from the Pierre Shale of Wyoming and South Dakota
Abstract The taxonomic identity of two well-preserved polycotylid plesiosaur skeletons from the Pierre Shale of far northern Wyoming and southern South Dakota has been controversial since theirExpand
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Viviparity and K-Selected Life History in a Mesozoic Marine Plesiosaur (Reptilia, Sauropterygia)
Plesiosaurs gave birth to a single, live large offspring and may have engaged in maternal care. Viviparity is known in several clades of Mesozoic aquatic reptiles, but evidence for it is lacking inExpand
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Abstract The cranial anatomy of plesiosaurs in the family Polycotylidae (Reptilia: Sauropterygia) has received renewed attention recently because various skull characters are thought to indicateExpand
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Osteology of the Cryptocleidoid Plesiosaur Tatenectes laramiensis, with Comments on the Taxonomic Status of the Cimoliasauridae
ABSTRACT Recent field work in the Bighorn Basin, Wyoming has recovered significant new material of the plesiosaur Tatenectes laramiensis. The majority of cryptocleidoid plesiosaurs have beenExpand
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Permian tetrapods from the Sahara show climate-controlled endemism in Pangaea
New fossils from the Upper Permian Moradi Formation of northern Niger provide an insight into the faunas that inhabited low-latitude, xeric environments near the end of the Palaeozoic era (∼ 251Expand
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A Virtual Phytosaur Endocast and Its Implications for Sensory System Evolution in Archosaurs
ABSTRACT Many recent studies have detailed the morphology of archosaurian endocrania. However, the outgroup to Archosauria, Phytosauria, has yet to be studied with modern techniques that wouldExpand
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Ecological determinants of clinal morphological variation in the cranium of the North American gray wolf
Abstract The gray wolf (Canis lupus) exhibits both genetic and morphologic clinal variation across North America. Although shape variation in wolf populations has been documented, no study has beenExpand
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The fossil record of phenotypic integration and modularity: A deep-time perspective on developmental and evolutionary dynamics
Significance Variation is the raw material for evolution, but studies have yet to unify the effects of intrinsic genetic and developmental interactions that influence variation with the extrinsicExpand
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