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Dental homologies in lamniform sharks (Chondrichthyes: Elasmobranchii)
  • K. Shimada
  • Biology, Medicine
  • Journal of morphology
  • 1 January 2002
The dentitions of lamniform sharks are said to exhibit a unique heterodonty called the “lamnoid tooth pattern.” The presence of an inflated hollow “dental bulla” on each jaw cartilage allows theExpand
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Phylogeny of lamniform sharks (Chondrichthyes: Elasmobranchii) and the contribution of dental characters to lamniform systematics
ABSTRACT Lamniform sharks (Chondrichthyes: Elasmobranchii) are common in the fossil record but are represented mainly by isolated teeth. A phylogenetic analysis of 15 extant lamniform species basedExpand
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Paleoecological relationships of the Late Cretaceous lamniform shark, Cretoxyrhina mantelli (Agassiz)
Several specimens of the Late Cretaceous lamniform shark, Cretoxyrhina mantelli (Agassiz), from the Niobrara Chalk of Kansas suggest that the shark fed on teleosts, mosasaurs, and possiblyExpand
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FOSSIL MARINE VERTEBRATES FROM THE LOWERMOST GREENHORN LIMESTONE (UPPER CRETACEOUS: MIDDLE CENOMANIAN) IN SOUTHEASTERN COLORADO
Abstract Fossiliferous deposits of the Greenhorn Limestone (Upper Cretaceous) are found on the Comanche National Grassland in southeastern Colorado. The lowest portion of the Greenhorn Limestone, theExpand
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100-Million-Year Dynasty of Giant Planktivorous Bony Fishes in the Mesozoic Seas
From Big Fish to Big Whales Whales are the largest animals today, and many feed on the abundant plankton, particularly diatoms, in the oceans. Whales arose and diversified in the Cenozoic, about 30Expand
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Teeth of Embryos in Lamniform Sharks (Chondrichthyes: Elasmobranchii)
  • K. Shimada
  • Biology
  • Environmental Biology of Fishes
  • 1 March 2002
The dentitions of lamniform sharks possess a unique heterodonty, the lamnoid tooth pattern. However, in embryos, there are 'embryonic' and 'adult' dentitions. The teeth in the embryonic dentition areExpand
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Dentition of the Late Cretaceous lamniform shark, Cretoxyrhina mantelli from the Niobrara Chalk of Kansas
ABSTRACT Some specimens of the Late Cretaceous shark, Cretoxyrhina mantelli (Agassiz), from the Niobrara Chalk in Kansas have been found with partial or nearly complete sets of teeth. Analysis ofExpand
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Mid-Cenomanian vertebrate faunas of the Western Interior Seaway of North America and their evolutionary, paleobiogeographical, and paleoecological implications
Abstract The Western Interior Seaway (WIS) was an epicontinental sea that extended north–south through the middle of North America during the last half of the Cretaceous, linking the Tethys Sea toExpand
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Skeletal anatomy of the Late Cretaceous lamniform shark, Cretoxyrhina mantelli from the Niobrara Chalk in Kansas
ABSTRACT Some specimens of the Late Cretaceous lamniform shark, Cretoxyrhina mantelli (Agassiz), from the Niobrara Chalk in Kansas are represented by partial skeletons. The vertebral and neurocranialExpand
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