Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Systematics and Phylogeny of the Ancorabolidae (Copepoda: Harpacticoida). II. Polyphyly of Polyascophorus and Description of Arthuricornua, New Genus

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

This Article is currently unavailable for purchase.
Add to Favorites
You must be logged in to use this functionality

Cover image Placeholder

Abstract Both sexes of a new genus and species of Ancorabolidae are described from the San Diego Trough in the Northeastern Pacific. Arthuricornua anendopodia, new genus, new species, is placed in the newly defined Ceratonotus-group which includes the genera Ceratonotus Sars, Dorsiceratus Drzycimski, and Polyascophorus George. Members of this group are characterized by the cylindrical body shape, presence of dorsal processes on somites bearing P2–P4, rostral shape, proximal antennulary elongation, 3-segmented condition of ♂ P3 endopod, and absorption of P5 endopodal lobe in both sexes. The major evolutionary transformations within the Ceratonotus-group are discussed and polarized by outgroup comparison with the Cletodidae. Parsimony analysis confirmed Dorsiceratus and Ceratonotus as monophyletic genera, but demonstrated the polyphyletic status of Polyascophorus. Polyascophorus schminkei George is identified as the earliest offshoot within the Ceratonotus-group and is transferred to a new genus Touphapleura. The common ancestry of Arthuricornua and Dorsiceratus, and the sistergroup relationship between Ceratonotus and Polyascophorus, are strongly supported. A basal dichotomy divides the genus Ceratonotus into two geographically separated clades. The genus Polyascophorus is redefined to include only P. martinezi George and P. gorbunovi (Smirnov).

Affiliations: 1: Department of Zoology, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom (


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation