Decapodiformes
| Decapodiformes | |
|---|---|
 | |
| Juvenile cephalopod from plankton Antarctica | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Cohort: | Neocoleoidea |
| Superorder: | Decapodiformes Leach, 1817[1] |
| Orders | |
| Synonyms | |
| |
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 eight short arms and two long tentacles. It is hypothesized that the ancestral coleoid had five identical pairs of limbs, and that one branch of descendants evolved a modified arm pair IV to become the Decapodiformes, while another another branch of descendants evolved and then eventually lost its arm pair II, becoming the Octopodiformes.
The Decapodiformes include:
- ?Order †Boletzkyida
- Clade †Belemnoidea[2]
- Order Spirulida: ram's horn squid
- Order Sepiida: cuttlefish
- Order Sepiolida: pygmy, bobtail and bottletail squid
- Order Teuthida: squid
References
- ↑ Young, R. E., Vecchione, M., Mangold, K. M. (2008). Decapodiformes Leach, 1817. Squids, cuttlefishes and their relatives. in The Tree of Life Web Project
- ↑ Klug, C., Schweigert, G., Fuchs, D., Kruta, I., Tischlinger, H. 2016. Adaptations to squid-style high-speed swimming in Jurassic belemnitids. Biology Letters. doi: 10.1098/rsbl.2015.0877
Further reading
- 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
External links
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