Armature of Cephalopod Arms

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

Cephalopoda Glossary

The armature of the arms consists of suckers only or suckers and/or hooks. The number of series of armature along the arm varies between families. The illustration on the right shows some of the main variation in this armature. A - Shows the armature in 4 series with suckers in the marginal series and hooks, covered by sheaths, in the medial series. B - Shows an irregular arrangement near the base but 6 series throughout the remainder of the arm. C - Shows a biserial arrangement at the arm base becoming an irregular 4 series distally. D - Shows a biserial arrangement throughout with suckers proximally, followed by hooks with suckers again distally.

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Figure. A- Preserved arm of Gonatus berryi. Photograph by R. Young. B- Arm III of Joubiniteuthis portieri. Drawing from Young and Roper, 1969. C- Arm III of Bathyteuthis abyssicola.  Drawing from Roper, 1969 . D- Arm III of Mesonychoteuthis hamiltoni. Drawing modified from Voss, 1980.


Roper, C.F.E. 1969. Systematics and zoogeography of the worldwide bathypelagic squid Bathyteuthis (Cephalopoda: Oegopsida). Bulletin of the United States National Museum, 291:1-210.

Young, R. E. and C. F. E. Roper (1969). A monograph of the Cephalopoda of the North Atlantic: The family Joubiniteuthidae. Smithson. Contr. Zool., No. 15: 1-10.

Voss, N. A. 1980. A generic revision of the Cranchiidae (Cephalopoda; Oegopsida). Bull. Mar. Sci., 30: 365-412.

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 Armature of Cephalopod Arms 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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