Category:Ptyonius
genus of the first four-limbed vertebrates and their descendants | |||||||||||||||||||||||||||||||||||
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| Taxon author | Edward Drinker Cope, 1875 | ||||||||||||||||||||||||||||||||||
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Media in category "Ptyonius"
The following 4 files are in this category, out of 4 total.
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Extinct monsters and creatures of other days (6288814190).jpg 1,971 × 3,156; 1.44 MB
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Ptyonius sp.jpg 800 × 471; 327 KB
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Studies for Students The Development and Geological Relations of the Vertebrates.pdf 1,012 × 1,404, 24 pages; 1.82 MB
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