1An order of crustaceans which includes shrimps, crabs, and lobsters. They have five pairs of walking legs and are typically marine.
- ‘Potentially recent major gene order rearrangements have been documented within the crustacean order Decapoda, the gastropod superfamily Helicoidea, the parasitic flatworm genus Schistosoma, and the tick family Ixodidae.’
- ‘Other aspects of the morphology of Palaeopemphix that separate it from the Decapoda include the bivalved nature of the carapace and the strong development of the lateromarginal carina, or doublure.’
- ‘The Penaeidae fall within the order Decapoda (class Malacostraca), which contains most commercially important crustacean species.’
- ‘Thus, the evolutionary history of the Decapoda, especially the Brachyura, may be more ancient than previously believed.’
- ‘An alternate suggestion is that the Cretaceous and the Eocene were each times of rapid evolution within the Decapoda.’
2A former order of cephalopod molluscs which includes squids and cuttlefishes, which have eight arms and two long tentacles.
Modern Latin (plural), from deca-‘ten’ + Greek pous, pod- ‘foot’.