File:Astraspis desiderata.png

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Astraspis_desiderata.png ‎(354 × 250 pixels, file size: 38 KB, MIME type: image/png)

Summary

Astraspis desiderata. Astraspids are still poorly known but recent discoveries of partially complete specimens of Astraspis desiderata, from the Ordovician of Colorado, have considerably increased their knowledge. Their dorsal headshield is made up by large, polygonal bone units and the gill openings are situated more dorsally than in arandaspids.

Licensing

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File history

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Date/TimeThumbnailDimensionsUserComment
current23:15, 3 January 2017Thumbnail for version as of 23:15, 3 January 2017354 × 250 (38 KB)127.0.0.1 (talk)<i>Astraspis desiderata</i>. Astraspids are still poorly known but recent discoveries of partially complete specimens of Astraspis desiderata, from the Ordovician of Colorado, have considerably increased their knowledge. Their dorsal headshield is made up by large, polygonal bone units and the gill openings are situated more dorsally than in arandaspids.
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