cover image: Memoirs of the Geological Survey of India  Paleontologia Indica

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Memoirs of the Geological Survey of India Paleontologia Indica

1873

INTRODUCTIO) The Ciliopoda are comparatively the least numerous of all the Mollusca which have been treated of, and their occurrence is also limited to a single group, the Arrialoor; therefore, the bearing of the class upon the determination of the relations of the cretaceous beds is not a very important one. [...] The digestive organs consist of the mouth, the cesophagus and the alimentary canal, which widens before the middle of its length into the stomach and then bends dorsally, gradually becoming thinner and terminating near the mouth at the outer or inner edge of the tentacular ring. [...] The food has been seen to move up and down in the stomach with the greatest rapidity before it entered the intestine, and the absorption of the nutriment appears to take place through both the stomachic and the intestinal membranes, through which it passes into the inner space of the body, and unites with the fluid which fills the latter. [...] 37 )4 CRETACEOUS CILIOPODA The primary division of the class is, according to the arrangement of the tentacles, in a single ring at the edge of the anterior end of the cell, or situated on special horse-shoe—shaped arms ; the former constitute the GYMNOLeEMATA, and are mostly marine ; the latter, the PHYLACTOL/EMATA, all of which are fresh water inhabitants. [...] The one refers to the form of the individual cell, and the other to that of the colony, that is, the manner in which the cells are arranged during growth by gemination.
technology medicine science
Pages
47
Published in
India
SARF Document ID
sarf.100011
Segment Pages Author Actions
Cover
i-i unknown view
Introduction
i-ii unknown view
Memoirs of the Geological Survey of India Paleontologia Indica
1-34 unknown view
Plate
i-vi unknown view

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