File:The Quarterly journal of the Geological Society of London (13204950443).jpg

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428
A. W. WATEES 01ST FOSSIL CHILOSTOMATOTJS
1. Catenicella ceibeieoemis, Waters.
Catenicella cribriformis, Waters, Poss. Chil. Bry. from S.W. Vic-
toria, p. 317, pi. xvi. fig. 39.
Loc. Fossil : S.W. Victoria and Bird Eock.
2. Catenicella alata, Thorns. Plate XII. figs. 15, 16.
Catenicella alata, W. Thomson, " On new Genera and Species of
Polyzoa," Zool. Bot. Assoc. Dublin, 1859, p. 80, pi. vi. fig. 4.
Catenicella alata, Waters, Poss. Chil. Bry. from S.W. Victoria,
p. 317, pi. xvi. figs. 47, 48, 49 ; Chil. Bry. from Mt. Gambier,
p. 260.
Catenicella alata, MacGillivray, Nat. Hist. Vict, decade iii. p. 21,
pi. xxiv. fig. 7.
As this seems in many respects to be a very typical Catenicella,
we may use it lor distinguishing the various parts of the Catenicella^.
I propose to call the bead containing only one zooecium a globulus ;
Pig. 2.
av-
c-
Diagram of globulus of Catenicella. a, distal tubular connexion ; b, supra-
avicularian compartment; c, infraavicularian compartment; d, pedal com-
partment; av, avicularian compartment; e, cribriform area; o, aperture:
/, zooecial sac.
those with two zooecia I call a biglobulus. In a globulus there are
at the side three compartments, which in the living state are
covered with a membrane. The compartment above the avicularium
I call the supraavicularian compartment ; that below, the infra-
avicularian compartment ; and the lower one, the pedal compartment.
This pedal compartment I consider the equivalent of the vittse in
such species as C. elegans &c. In C. alata the supraavicularian
compartment is very variable, sometimes rising into a prominent
spinous process ; in others there is no spinous projection. The other
two compartments are not so variable, and are usually of moderate
size ; but until the amount of variation in recent species has been
carefully studied, it will be very difficult for palaeontologists to de-
termine the Catenicella. As the shape of fig. 15 varies so much

from fig. 16, I have had some hesitation in uniting it with C. alata ;
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Source https://www.flickr.com/photos/biodivlibrary/13204950443
Author Geological Society of London
Full title
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The Quarterly journal of the Geological Society of London.
Page ID
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36929035
Item ID
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113681 (Find related Wikimedia Commons images)
Title ID
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51125
Page numbers
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Page 428
Names
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NameFound:Catenicella NameConfirmed:Catenicella EOLID:71808 NameBankID:2576141 NameFound:Catenicella alata NameConfirmed:Catenicella alata Wyville Thomson, 1858 NameFound:Catenicella cribriformis NameConfirmed:Catenicella cribiformis NameFound:Catenicella elegans NameConfirmed:Catenicella elegans EOLID:587717 NameBankID:2574359 NameFound:Polyzoa NameConfirmed:Polyzoa EOLID:64139 NameBankID:2764675 NameFound:Victoria NameConfirmed:Victoria EOLID:34123 NameBankID:897688
BHL Page URL
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https://www.biodiversitylibrary.org/page/36929035
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Text
Flickr sets
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  • The Quarterly journal of the Geological Society of London. v. 39 (1883).
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Flickr posted date
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16 March 2014
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This file comes from the Biodiversity Heritage Library.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

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