File:The Quarterly journal of the Geological Society of London (13369060545).jpg

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506
PROCEEDINGS OE THE GEOLOGICAL SOCIETY. .June 11,
behind a plane at right angles with the distal articulation"*. This
description is drawn from the Cretaceous genus of Ichthyosaurians
found at Cambridge, and would apply but indifferently to most of
the genera from the Lias. This remark holds true in a less degree
for the following notes on the similitudes of the Ichthyosaurian
femur * : —
" The femur, in shortness and strength, recalls some seals ; but in
arrangement of parts, the resemblance among mammals is closest to
Ornithorhynchus, which similarly has lateral trochanters extending
the width of the proximal end, though in Ichthyosaurus the tro-
chanters are not divided from the rounded articular head." " Among
crocodiles the only resemblances are that the articular ends of the
bone are compressed, the proximal one rounded and at right angles
to the distal end." " The two trochanters at the head of the femur
of Ohelydra, though not so well developed and not opposite to each
other, are homologous with those of the head of the femur in Ichthy-
osaurus ; but there is no other character in common in the limbs."
Fig. 1. — Right Femur of Cetarthrosaurus Walkeri.
a. Underside, b. View from the distal end. P. Proximal articulation.
T. Anterior trochanter. T'. Posterior trochanter.
"With the type thus indicated, Cetarthrosaurus is closely comparable.
The specimen may be thus described : —

The bone is 2-
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Source https://www.flickr.com/photos/biodivlibrary/13369060545
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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39051444
Item ID
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120601 (Find related Wikimedia Commons images)
Title ID
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51125
Page numbers
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Page 506
Names
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NameFound:Cetarthrosaurus NameConfirmed:Cetarthrosaurus NameBankID:4109612 NameFound:Ichthyosaurus NameConfirmed:Ichthyosaurus EOLID:13226022 NameBankID:4204055 NameFound:Ornithorhynchus NameConfirmed:Ornithorhynchus EOLID:41542 NameBankID:2480054 NameFound:Walkeri NameConfirmed:Walkeri NameBankID:5129985
BHL Page URL
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https://www.biodiversitylibrary.org/page/39051444
Page type
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Text
Flickr sets
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  • The Quarterly journal of the Geological Society of London. v. 29 (1873).
Flickr tags
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Flickr posted date
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24 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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26 August 2015

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current10:17, 26 August 2015Thumbnail for version as of 10:17, 26 August 20151,917 × 3,186 (1.09 MB)Fæ (talk | contribs)== {{int:filedesc}} == {{BHL | title = The Quarterly journal of the Geological Society of London. | source = http://www.flickr.com/photos/biodivlibrary/13369060545 | description = 506 <br> PROCEEDINGS OE THE GEOLOGICAL SOCIETY. .June 11, <br> behind a...

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