pikabu monster
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Pterygotidae
21-October-2015 Wednesday
Jaekelopterus is the largest known arthropod
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Arthropoda
Arthropoda, Pterygotidae
Eurypterida
Eurypterida, Pterygotidae
Jaekelopterus
Jaekelopterus, Pterygotidae
Merostomata
Merostomata, Pterygotidae
Pterygotidae
Crustoscorpion
Pterygotidae, Ракоскорпион
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