Note

Cephalopod Arms IV: Size

Richard E. Young, Michael Vecchione, and Katharina M. Mangold (1922-2003)

Cephalopoda Glossary


Arms IV (i.e., the ventral arms) are not usually the largest in decapodiforms. In a few families, however, arms IV of most species are not only much longer but generally much thicker, due to the broad lateral membrane, than the other arms.

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Figure. A - Chiroteuthis veranyi, side view, photograph by E. McSweeny. B - Chiroteuthis spoeli, drawing by J. R. Schroeder. C - Mastigoteuthis agassizii, dorsal view, drawing from Verrill, 1881. (A, B - Fam. Chiroteuthidae; C - Fam. Mastigoteuthidae)

References

Verrill, A.E. 1881. The cephalopods of the north-eastern coast of America. Part II. The smaller cephalopods, including the "squids" and the octopi, with other allied forms. Trans. Connecticut Acad. Sciences, 5: 259-446.

About This Page


University of Hawaii, Honolulu, HI, USA


National Museum of Natural History, Washington, D. C. , USA

Katharina M. Mangold (1922-2003)
Laboratoire Arago, Banyuls-Sur-Mer, France

Page: Tree of Life Cephalopod Arms IV: Size Authored by Richard E. Young, Michael Vecchione, and Katharina M. Mangold (1922-2003). The TEXT of this page is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.

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