| 释义 |
Definition of nuculoid in English: nuculoidadjective ˈnjuːkjʊlɔɪd Zoology Originally: of, relating to, or resembling bivalve molluscs of a type represented by the nut shell Nucula. In later use: specifically of, relating to, or designating protobranch bivalve molluscs of the order Nuculoida, which includes mainly deposit-feeding species attested in the fossil record from the Ordovician period onwards, and often regarded as among the most primitive extant bivalves.
Origin Mid 19th century. From scientific Latin Nucula, genus name, use as genus name of classical Latin nucula small nut + -oid. Definition of nuculoid in US English: nuculoidadjectiveˈnjuːkjʊlɔɪd Zoology Originally: of, relating to, or resembling bivalve molluscs of a type represented by the nut shell Nucula. In later use: specifically of, relating to, or designating protobranch bivalve molluscs of the order Nuculoida, which includes mainly deposit-feeding species attested in the fossil record from the Ordovician period onwards, and often regarded as among the most primitive extant bivalves.
Origin Mid 19th century. From scientific Latin Nucula, genus name, use as genus name of classical Latin nucula small nut + -oid. |