File:The Quarterly journal of the Geological Society of London (13889757548).jpg

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62
PEOF. E. W. CLAYPOLE ON PIERASPIDIAlSr EISH IN
without intervening spaces ; furrows between ridges consequently
angular. Diameter at base about one eighth of an inch.
Horizon and locality. Clinton group, Iron-sandstone, Perry co.;
Pennsylvania.
Pal^aspis, g. n.
The genus has been sufficiently described in the body of the paper.
Pig. 7. — Outline of Shield o/Palseaspis americana. (isTat. size.)
The striation is shown only over a part of the. shield, but extends really
over all.
Pal^aspis ameeicana, sp. n. (Fig. 7.)
Shield elliptical in outline, truncate at one end, convex on upper
surface, between two and three inches long ; lateral edges rolling in
under the upper surface ; thickness not exceeding ^ inch over its
whole extent. Upper surface covered with a tracery consisting of
fine, delicate, flowing, depressed lines branching and anastomosing,
but in general keeping directions rudely parallel, often abruptly
curving near the end from both sides towards the medial line, where
they terminate without ending in a spine.
Locality and horizon. Perry county, Pennsylvania, in the Bloom-
field Sandstone or uppermost member of the Onondaga Yariegated
Shales.
Pal^aspis biteiincata, sp. n. (Fig. 8.)

Shield elliptical, truncate at hoth ends, more convex than P. ame-
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Source https://www.flickr.com/photos/biodivlibrary/13889757548
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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37046900
Item ID
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114009 (Find related Wikimedia Commons images)
Title ID
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51125
Page numbers
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Page 62
Names
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NameFound:Shales
BHL Page URL
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https://www.biodiversitylibrary.org/page/37046900
Page type
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Text
Flickr sets
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  • The Quarterly journal of the Geological Society of London. v. 41 (1885).
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Flickr posted date
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30 April 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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current04:31, 26 August 2015Thumbnail for version as of 04:31, 26 August 20151,209 × 2,022 (351 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{BHL | title = The Quarterly journal of the Geological Society of London. | source = http://www.flickr.com/photos/biodivlibrary/13889757548 | description = 62 <br> PEOF. E. W. CLAYPOLE ON PIERASPIDIAlSr EISH IN <br> without inte...

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