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On the Palatoquadrate and Hyomandibula of Pleuracanthus sessilis Jordan

Published online by Cambridge University Press:  01 May 2009

J. A. Moy-Thomas  and
E. I. White
J. A. Moy-Thomas
Affiliation:
Dept. of Zoology and Comparative Anatomy, Oxford
E. I. White
Affiliation:
British Museum (Natural History).
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Extract

Watson (1937) in his important work on Acanthodians demonstrated that the mode of jaw-suspension of this group and probably also that of the Arthrodira.Macropetalichthyida, Rhenanida, and Antiarchi was in a more primitive condition than in other Gnathostomes. The hyomandibula of these fishes played no important part in the suspension of the jaws, and the hyoidean gill-slit persisted as such, not being reduced to a spiracle. Watson introduced the name Aphetohyoidea (free hyoid) for the group containing all these fishes, distinguishing them from the more advanced Chondrichthyes and Osteichthyes.

Type
Original Articles
Information
Geological Magazine , Volume 76 , Issue 10 , October 1939 , pp. 459 - 463
Copyright
Copyright © Cambridge University Press 1939

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References

REFERENCES

Daniel, J. F., 1934. The Elasmobranch Fishes, 3rd edit., Berkeley, Calif.CrossRefGoogle Scholar
Jaekel, O., 1895. “Über die Organisation der Pleuracanthiden,” Sitz. Ber. Ges. Naturf. Freunde Berlin, 69–85.Google Scholar
Jaekel, O., 1925. “Das Mundskelett der Wirbeltiere,” Morphol. Jahrb., Leipzig, lv, 402–484.Google Scholar
Reis, O., 1897. “Das Skelett der Pleuracanthiden,” Abh. Senckenb. Naturf. Ges., Frankfurt a. M., xx, 57–156.Google Scholar
Watson, D. M. S., 1937. “The Acanthodian Fishes,” Phil. Trans. Roy. Soc., London (B), cxxviii, 49–146.Google Scholar