Stylonurids, an extinct family of prehistoric Sea Scorpions, which lived from the Ordovician to Lower Permian periods, were small to very large forms with scales developing into tubercules and knobs…
(read more: Wikipedia)   (image: Nobu Tamura)

Stylonurids, an extinct family of prehistoric Sea Scorpions, which lived from the Ordovician to Lower Permian periods, were small to very large forms with scales developing into tubercules and knobs…

(read more: Wikipedia)   (image: Nobu Tamura)

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    Stylonurids, extinct Sea Scorpions… (Wikipedia)
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