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Morphology of the braincase in the broadnosed sevengill shark Notorynchus (Elasmobranchii, Hexanchiformes), based on CT scanning

by: Maisey, John G

Publication date: 2004

Usage: Attribution-NonCommercial-ShareAlike 4.0 International

Topics: Notorynchus cepedianus, Anatomy, Skull, Tomography, Sharks, Notorynchus cepedianus -- Anatomy, Skull -- Tomography, Sharks -- Anatomy

Publisher: New York, NY : American Museum of Natural History

Collection: americanmuseumnaturalhistory; biodiversity

Contributor: American Museum of Natural History Library

Language: English

Rights: http://biodiversitylibrary.org/permissions

Rights-holder: American Museum of Natural History Library

Volume: no. 3429

52 p. : 26 cm

"A detailed description is presented of the neurocranium in the hexanchiform shark Notorynchus cepedianus, a primitive modern elasmobranch (neoselachian). The study is based on high-resolution CT scanning and digital imaging, which revealed both the external and internal morphology of a wax-impregnated braincase. Besides providing new data concerning Notorynchus and neoselachians generally, the investigation also provides a control for establishing the reliability of morphological observations of fossil elasmobranch braincases based on CT scans. Many of the features described here have considerable phylogenetic potential, although comparative CT scan data are still unavailable for most modern and extinct elasmobranchs"--P. [1]

Title from caption

"February 27, 2004."

Includes bibliographical references (p. 50-52)

Abstract: 'A detailed description is presented of the neurocranium in the hexanchiform shark Notorynchus cepedianus, a primitive modern elasmobranch (neoselachian). The study is based on high-resolution CT scanning and digital imaging, which revealed both the external and internal morphology of a wax-impregnated braincase. Besides providing new data concerning Notorynchus and neoselachians generally, the investigation also provides a control for establishing the reliability of morphological observations of fossil elasmobranch braincases based on CT scans. Many of the features described here have considerable phylogenetic potential, although comparative CT scan data are still unavailable for most modern and extinct elasmobranchs'--P. [1].