Austrorossia
Richard E. Young and Michael Vecchione
This tree diagram shows the relationships between several groups of organisms.
The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right.
You can click on the root to travel down the Tree of Life all the way to the root of all Life, and you can click on the names of descendent subgroups to travel up the Tree of Life all the way to individual species.
For more information on ToL tree formatting, please see Interpreting the Tree or Classification. To learn more about phylogenetic trees, please visit our Phylogenetic Biology pages.
close boxCharacteristics
- Arms
- No greatly enlarged suckers in middle of arms II and III.
- Both arms I hectocotylized.
- Tentacles
- Clubs not expanded.
- Club suckers in 18-46 series. Click on an image to view larger version & data in a new window
Figure. View of a twisted club of A. mastigophora. Drawing from Chun (1910).
- Photophores
- Photophores absent from ink sac.
- Viscera
- Ink sac functional.
- Anal flaps poorly-developed.
- Epirenal bodies present on either side of the rectum. Click on an image to view larger version & data in a new window
Figure. Ventral view of the mantle cavity of A. mastigophora, mature female. Arrow points to epirenal body (function unknown). Drawing modified from Chun (1910).
Comments
Reid (1991) considers this a subgenus of Rossia and she found that only the number of suckers series on the club clearly distinguishes this group from other Rossia.
The systematic value of the epirenal bodies is not fully known as they, apparently, have not been specifically looked for in all species of Rossia. The name refers to their close location to the renal papillae (Boletzky, 1971).
References
Boltezky, S.v. 1971. Neorossia n.g. pro Rossia (Allorossia) caroli Joubin, 1902, with remarks on the generic status of Semirossia Steenstrup, 1887 (Mollusca: Cephalopoda). Bulletin of Marine Science, 21(4):964-969.
\Chun, C. 1910. Die Cephalopoden. Oegopsida. Wissenschaftliche Ergebnisse der Deutschen Tiefsee Expedition auf dem Dampfer "Valdivia" 1898-1899, 18(1):1-401.
Reid, A. 1991. Taxonomic Review of the Australian Rossiinae (Cephalopoda: Sepiolidae), with a Description of a New Species, Neorossia leptodons, and Redescription of N. caroli (Joubin, 1902) . Bulletin of Marine Science, 49(3)(1991):748-831.
Title Illustrations
| Scientific Name | Austrorossia mastigophora |
|---|---|
| Location | Near the East African coast. |
| Reference | Chun, C. 1910. Die Cephalopoden. Oegopsida. Wissenschaftliche Ergebnisse der Deutschen Tiefsee Expedition auf dem Dampfer "Valdivia" 1898-1899, 18(1):1-401. |
| Sex | Female |
| View | Dorsal |
| Size | ca. 45 mm ML |
About This Page
University of Hawaii, Honolulu, HI, USA
National Museum of Natural History, Washington, D. C. , USA
Page copyright © 2014 and
Page: Tree of Life
Austrorossia .
Authored by
Richard E. Young and Michael Vecchione.
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.
- First online 01 September 2004
- Content changed 30 November 2003
Citing this page:
Young, Richard E. and Michael Vecchione. 2003. Austrorossia . Version 30 November 2003 (under construction). http://tolweb.org/Austrorossia/23977/2003.11.30 in The Tree of Life Web Project, http://tolweb.org/
