Acanthopolymastia Kelly-Borges & Bergquist 1997 ...

Genus Acanthopolymastia Kelly­Borges & Bergquist, 1997 Diagnosis (emended from Boury­Esnault 2002): Sponges are cushion­shaped or discoid, with a single low oscular papilla. The edge of the body is very hispid whereas the other part of the surface is only minutely hispid. The choanosomal skeleto...

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Bibliographic Details
Main Authors: Plotkin, Alexander S., Janussen, Dorte
Format: Text
Language:unknown
Published: Zenodo 2008
Subjects:
Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Hadromerida
Polymastiidae
Acanthopolymastia
Antarc*
Antarctic
Weddell Sea
Online Access:https://dx.doi.org/10.5281/zenodo.6235784
https://zenodo.org/doi/10.5281/zenodo.6235784
Description
Summary:Genus Acanthopolymastia Kelly­Borges & Bergquist, 1997 Diagnosis (emended from Boury­Esnault 2002): Sponges are cushion­shaped or discoid, with a single low oscular papilla. The edge of the body is very hispid whereas the other part of the surface is only minutely hispid. The choanosomal skeleton is composed by tracts of tylostyles, subtylostyles or styles which project beyond the surface making up the hispidation. The cortical skeleton includes a palisade of small tylostyles. Acanthose microxeas are very abundant both in cortex and choanosome. Emendations proposed: 1) Spicules of the choanosomal tracts may be styles. 2) In all known Acanthopolymastia spp. the surface is hispid to a greater or lesser degree (see Kelly­Borges & Bergquist 1997). This hispidation is constituted by the choanosomal tracts projecting beyond the whole surface but not exclusively at the edge as given in Systema Porifera (Boury­Esnault 2002). Moreover, the excess edge hispidation shared by A. acanthoxa (Koltun, 1964) and A. ... : Published as part of Plotkin, Alexander S. & Janussen, Dorte, 2008, Polymastiidae and Suberitidae (Porifera: Demospongiae: Hadromerida) of the deep Weddell Sea, Antarctic *, pp. 95-135 in Zootaxa 1866 on page 98, DOI: 10.5281/zenodo.183878 ...

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