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External morphology of the choanoflagellate Salpingoeca gracilis James-Clark

Published online by Cambridge University Press:  11 May 2009

Helge Abildhauge Thomsen
Affiliation:
Institut for Sporeplanter, Ø. Farimagsgade 2 D, DK-1353 Copenhagen K., Denmark

Extract

In his search for evidence illustrating the botanical/zoological affinities of the sponges (Porifera), James-Clark (1867) studied a number of colourless flagellates. The genus Salpingoeca (Craspedophyceae, Christensen, 1962; cf. Chadefaud, 1960) was thus erected to comprise certain solitary, lorica-dwelling organisms, characterized by a single anterior flagellum encircled by a ‘filmy, membranous, colourless collar’ (James-Clark, 1867).

About fifty species (approximately twenty marine) are at present allocated to this genus, provided it is defined as e.g. by Norris (1965) and Bourrelly (1968) (i.e. including Lagenoeca Kent and Pachysoeca Ellis).

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1977

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