File:Pteraspidomorphi.gif
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| Description |
English: Pteraspidomorphs are among the earliest known vertebrates. They were jawless and possessed a massive dermal skeleton. They are characterized by their dermal head armor having large, median, ventral and dorsal plates or "shields" (red). |
| Date | |
| Source | Tree of Life |
| Author | Philippe Janvier |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 07:45, 2 March 2013 | | 368 × 346 (37 KB) | Epipelagic (talk | contribs) | User created page with UploadWizard |
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