Decapodiformes Juvenile cephalopod from plankton
Scientific classification Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda cohort: Neocoleoidea Superorder: Decapodiformes
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
- ^ Young, R. E., Vecchione, M., Mangold, K. M. (2008). Decapodiformes Leach, 1817. Squids, cuttlefishes and their relatives. in The Tree of Life Web Project
- Young, Richard E.; Vecchione, Michael; Donovan, Desmond T. (1998). "The evolution of coleoid cephalopods and their present biodiversity and ecology". South African Journal of Marine Science 20 (1): 393–420. doi:10.2989/025776198784126287. abstract
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