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  • Decapodiformes is a superorder of Cephalopoda, which includes all species with ten limbs; the name derives from the Greek word meaning ten feet. The ten limbs are divided into 8 short arms and 2 long tentacles. It is presumed that an ancestral coleoid had five identical pairs of limbs, and that one branch evolved a modified arm pair IV and became the Decapodiformes species. Another branch evolved and then eventually lost its arm pair II, becoming the Octopodiformes. The superorder of Decapodiformes includes: ?Order †Boletzkyida Order Spirulida: ram's horn squid Order Sepiida: cuttlefish Order Sepiolida: pygmy, bobtail and bottletail squid Order Teuthida: squid Wikipedia

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