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II.—Notes on New or Imperfectly Known Chalk Polyzoa

Published online by Cambridge University Press:  01 May 2009

R. M. Brydone
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Extract

The group of Membraniporæ, with a small median barred avicularium placed immediately above the oæcium, of which M. Griffithi, Bryd., is a leading instance, contains several Senonian members in addition to the Trimingham forms (M. Triminghamensis, M. anterides, M. humiliata) which I have already described in this Magazine. They seem to arise first in the zone of Micraster cor-anguinum.

Membranipora Simulacrum, sp. nov. (Pl. XXVI, Figs. 1, 2.)

Zoarium unilaminate, always adherent.

Zoæcia large, very slightly subpyriform, areas oval, with average length .5 to .55 mm. and breadth .3 mm.; side walls bent slightly inwards, and so low and slender that at a hasty inspection they might be taken to be mere ghosts of some species with a low arched front wall.

Type
Original Articles
Information
Geological Magazine , Volume 1 , Issue 8 , August 1914 , pp. 345 - 347
Copyright
Copyright © Cambridge University Press 1914

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References

1 See the present writer's Notes in Camping in Crete (A., Trevor-Battye), p. 245, London, 1913.Google Scholar