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304
PROCEEDINGS OE THE GEOLOGICAL SOCIETY. .Feb. 21,
.=heiglit?., and is at right angles to the direction of the lateral
line of the fish."
Figs. 1-4. — Diagrammatic restorations of the heads of (1.) Amphicen-
trum, (2.) Platysomus, (3.) ^chmodus, and (4.) Pycnodus
.after ThioUihre),
Fiff. 1,
Fig. 3.
1^1^
s.o.
Fig. 2.
Fig. 4,
Pa.,
P.Pr...
A. Fr.--"::

■.:::;.:;/

Eth.
""'/^^B
Na. -.. ,.
-".^^r^
Pmx.
/%L -.
^i.ijtiiii-' ^
Mn.
Br..
.,-• Op.
S.Op.
Eth.
^-« Sph.
Figure 2 is a diagrammatic restoration of the stmcture of the
head of Platysomus. The occipital crest rises from a narrow bone
(S.O.), lodged between the square parietals (Pa.), and connected in
front with the frontals (Fr.), which, broader behind, narrows in
front, receiving in its outer excavated margin two bones, which com-
plete the orbital circle superiorly. The posterior of these (P.Fr.)
extends to the parietals and thus represents a united postfrontal
and squamosal (mastoid, Cuv.). The anterior frontal (A. Fr.) dips
down, and gives insertion to the narrow suborbital chain which is

attached behind to the P, Fr. The anterior frontals of opposite sides
Date
Source https://www.flickr.com/photos/biodivlibrary/13935429912
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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36164741
Item ID
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111477 (Find related Wikimedia Commons images)
Title ID
InfoField
51125
Page numbers
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Page 304
Names
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NameFound:Platysomus NameConfirmed:Platysomus EOLID:4603513 NameBankID:178222 NameFound:Pycnodus NameConfirmed:Pycnodus EOLID:4654792 NameBankID:4324329
BHL Page URL
InfoField
https://www.biodiversitylibrary.org/page/36164741
Page type
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Text
Flickr sets
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  • The Quarterly journal of the Geological Society of London. v. 22 (1866).
Flickr tags
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Flickr posted date
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21 April 2014
Credit
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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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current06:36, 26 August 2015Thumbnail for version as of 06:36, 26 August 20151,201 × 2,049 (422 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{BHL | title = The Quarterly journal of the Geological Society of London. | source = http://www.flickr.com/photos/biodivlibrary/13935429912 | description = 304 <br> PROCEEDINGS OE THE GEOLOGICAL SOCIETY. .Feb. 21, <br> .=heiglit...

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