Title
An evaluation of jaw suspension in sharks
Title Variants
Alternative:
Shark jaw suspension
Related Titles
Series:
American Museum novitates, no. 2706
By
Maisey, John G.
Type
Book
Material
Published material
Publication info
New York, N.Y, American Museum of Natural History, c1980
Notes
Title from caption.
"December 31, 1980."
"Evidence and opinions on the nature and diversity of elasmobranch jaw suspension are discussed and the phylogenetic implications of some of these differences are considered. The hyomandibula is attached to the mandibular joint in all living elasmobranchs, and all are therefore hyostylic with respect to the hyomandibula. Amphistyly is a subset or condition of hyostyly rather than an alternative mode of jaw support. Living osteichthyans and perhaps acanthodians are similarly hyostylic, and there is no reason to suppose that this condition is anything but a primitive gnathostome character. Some elasmobranchs have an orbital process which has a consistent relationship to nerves and vessels within the orbit. It is possible to use this relationship systematically to define a group of 'orbitostylic' sharks in a novel way. The orbital process does not seem to correspond to the 'basal articulation' of acanthodians and osteichthyans"--P. [1].
Subjects
Anatomy
,
Evolution
,
Fishes
,
Jaws
,
Sharks
,
Sharks, Fossil
Call Number
QL1 .A436 no.2706, 1980
Language
English
Identifiers
OCLC:
7072871
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