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| Carcharocles | |
|---|---|
| Name | Carcharocles |
| Status | fossil |
| Fossil range | Paleogene–Neogene |
| Taxon | Genus |
| Subdivision ranks | Species |
Carcharocles is an extinct genus of large lamniform sharks known primarily from fossilized teeth and vertebral centra. Originating in the Paleogene and peaking in the Neogene, the genus is central to discussions of megatooth shark evolution and paleobiology, with connections discussed in literature alongside Megalodon, Otodus and various Cenozoic marine faunas. Debates over its taxonomy have involved researchers associated with institutions such as the Smithsonian Institution, American Museum of Natural History and universities including Harvard University and University of California, Berkeley.
Taxonomic treatments of the genus have varied across works by paleontologists affiliated with University of Michigan, Natural History Museum, London, Yale University and the Royal Society. The genus name was introduced to accommodate megatooth forms distinguished from Otodus and has been discussed in monographs from the Geological Society of America, publications tied to the Paleontological Society and regional surveys in journals like the Journal of Vertebrate Paleontology. Systematic revisions have involved comparisons to taxa described by historical figures connected to the British Museum (Natural History), stratigraphic correlations with sections curated at the United States Geological Survey and nomenclatural arguments appearing in proceedings of the International Commission on Zoological Nomenclature.
Fossil teeth attributed to the genus display large triangular crowns, serrated cutting edges and robust roots, comparable in morphology to specimens studied at the Field Museum of Natural History, Natural History Museum of Los Angeles County and collections of the University of Florida. Morphological analyses have been published alongside works from researchers at the University of Cambridge, University of Zurich and University of Tokyo. Vertebral centra occasionally preserved with associated teeth provide data used in morphometric studies cited in literature from the Royal Ontario Museum and the National Museum of Natural History (France). Comparative anatomy papers often reference extant taxa curated by institutions such as the Scripps Institution of Oceanography and the Monterey Bay Aquarium Research Institute.
Phylogenetic hypotheses position the genus within a lineage that some authors trace from Paleocene Otodus species through to Neogene megatooth forms, reflecting work published by teams affiliated with Columbia University, University of California, Santa Cruz and the University of Michigan Museum of Paleontology. Molecular clock studies that calibrate shark evolution using fossils from this lineage are discussed in papers involving researchers at Stanford University, Oxford University and the University of Edinburgh. The genus figures in debates over anagenetic versus cladogenetic models presented at meetings of the Society of Vertebrate Paleontology and in syntheses appearing in volumes produced by the Cambridge University Press.
Functional interpretations of tooth serration and jaw mechanics reference comparative studies of predatory behavior described for taxa housed at Monterey Bay Aquarium Research Institute, Cornell University, and field investigations along coasts cataloged by the Florida Museum of Natural History and Smithsonian Tropical Research Institute. Isotope geochemistry studies of enamel carbonate from specimens curated by the University of Barcelona, University of Buenos Aires and the Australian Museum inform reconstructions of trophic level, seasonality and migration, paralleled in work on modern predators at the Woods Hole Oceanographic Institution and the Dauphin Island Sea Lab. Paleoecological syntheses incorporate faunal lists from formations studied by teams at University of California, Davis, University of Texas at Austin and Purdue University.
Fossils attributed to the genus have been reported from Cenozoic deposits across multiple continents, with important assemblages curated at the British Museum (Natural History), American Museum of Natural History, Museum für Naturkunde, Berlin and the Naturhistorisches Museum Wien. Notable stratigraphic occurrences include sequences from formations studied by researchers at University of North Carolina, University of Argentina, University of Chile and institutions participating in regional surveys like the Geological Survey of Canada. Paleobiogeographic discussions reference marine transgressions documented in work from the Plymouth Geological Society and basin analyses conducted by groups at the United States Geological Survey and the Geological Survey of India.
Several species historically assigned to the genus have been the subject of revisionary work by teams from the Smithsonian Institution, Natural History Museum, London, University of California, Berkeley and the Field Museum. Iconic specimens include large teeth and associated material housed at the Florida Museum of Natural History, the Natural History Museum of Los Angeles County and private collections that have been cataloged in collaboration with universities such as University of South Florida and Florida Atlantic University. Type specimens and lectotypes have been discussed in monographs released through the Paleontological Society and in catalogue entries maintained by the American Museum of Natural History.
Extinction timing for the genus is evaluated in studies that synthesize faunal turnover events recorded in Neogene sections curated at the Smithsonian Institution, Natural History Museum, London and research programs at Scripps Institution of Oceanography and Woods Hole Oceanographic Institution. The legacy of the genus permeates public exhibits at institutions including the Field Museum of Natural History, American Museum of Natural History and the Natural History Museum, London, and continues to influence outreach and scientific discourse at universities such as Harvard University and Stanford University.
Category:Prehistoric sharks