Pterygotus (meaning wing-animal or finned one) is a genus of marine arthropod within the extinct order eurypterida (or Sea Scorpion), and includes some of the largest species of this group. Pterygotid eurypterids, which lived from the Early Silurian to Devonian periods, were characterised by small to large exoskeletons with semilunar scales. The t...
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Pterygotus was an Eurypterid, an extinct sea scorpion. This ancient marine arthropod (a segmented invertebrate with a chitinous exoskeleton and jointed le gs) was over 6.5 ft (2 m) long. One specimen in NY, USA was 9 ft (2.75 m) long. These hunters had a scorpion-like stinger which may have contained poison, 3 pairs of jointed legs, 2 clawed arms, ...
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