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Delwedd:Pituriaspida.gif

Pituriaspida.gif ‎((375 × 237 picsel, maint y ffeil: 12 KB, ffurf MIME: image/gif))

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English: Pituriaspis (Pituriaspida). Pituriaspids are mainly known by Pituriaspis, from the Devonian of Australia. As a whole, their headshield is quite similar to that of osteostracans, though devoid of a naso-hypophysial opening. The mouth, gill openings and presumably the nasal aperture were all situated on the ventral side of the head. Well-developed paired fins attached on either sides of the headshield. The only diagnostic feature of pituriaspids is an enigmatic pit adjacent to the eyes.
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This image is uploaded as image number 4380 at Tree of Life Web Project (tolweb.org).
This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information.
Awdur Philippe Janvier

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This file, which was originally posted to http://tolweb.org/media/4380, was reviewed on 24 March 2014 by reviewer Lymantria, who confirmed that it was available there under the stated license on that date.

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cyfredol10:17, 12 Ionawr 2010Bawdlun y fersiwn am 10:17, 12 Ionawr 2010375 × 237 (12 KB)Haplochromis{{Information |Description={{en|1=''Pituriaspis'' (Pituriaspida). Pituriaspids are mainly known by ''Pituriaspis'', from the Devonian of Australia. As a whole, their headshield is quite similar to that of osteostracans, though devoid of a naso-hypophysial

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