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Megalodontoidea
Megalodontoidea is a superfamily of fossil bivalves in the order Megalodontida. The following families are included in Megalodontoidea: *† Ceratomyopsidae *†Dicerocardiidae Dicerocardiidae is an extinct family of fossil saltwater clams, Marine (ocean), marine heterodont bivalve molluscs, in the order Megalodontida. Genera Genera within the family Dicerocardiidae: * †''Cornucardia'' Koken 1913 * †''Dicerocardium ... *† Megalodontidae *† Pachyrismatidae *† Wallowaconchidae References Bivalve superfamilies Bivalve taxonomy Prehistoric bivalves {{paleo-bivalve-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dicerocardiidae
Dicerocardiidae is an extinct family of fossil saltwater clams, marine heterodont bivalve molluscs, in the order Megalodontida. Genera Genera within the family Dicerocardiidae: * †'' Cornucardia'' Koken 1913 * †''Dicerocardium ''Dicerocardium'' is an extinct genus of fossil saltwater clams, marine heterodont bivalve molluscs, in the family Dicerocardiidae. These bivalves were stationary semi-infaunal suspension feeders. Distribution Fossils of species in this genus ha ...'' Stoppani 1856, the type genus * †'' Physocardia'' Wahrmann 1894 * †'' Platycardia'' Beringer 1949 * †'' Pseudisocardia'' Douvillé 1912 * †'' Pseudisocardia'' Macfadyeni Cox 1935 * †'' Rostrocardia'' Freneix 1972 ReferencesPaleobiology Database Prehistoric bivalve families Triassic first appearances Cretaceous extinctions Bivalve taxonomy {{paleo-bivalve-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megalodontidae
Megalodontidae is an extinct family of bivalve molluscs that reportedly lived from the Devonian to the Jurassic period. Nomenclature A family of insects was also previously called "Megalodontidae", containing the sawfly genus '' Megalodontes''. In order to remove the homonymy, that family has been renamed Megalodontesidae. Genera *†'' Conchodon'' *†'' Gemmellarodus'' di Stefano, 1912 *†''Megalodon Megalodon (''Otodus megalodon''), meaning "big tooth", is an extinct species of mackerel shark that lived approximately 23 to 3.6 million years ago (Mya), from the Early Miocene to the Pliocene epochs. It was formerly thought to be a membe ...'' Sowerby, 1827 *†'' Neomegalodon'' Guembel, 1864 *†'' Pachyrisma'' *†'' Protomegalodon'' *†'' Pterocardia'' Bayan, 1874 *†'' Quemocuomegalodon'' Yao et al. 2003 *†'' Rhaetomegalodon'' *†'' Triadomegalodon'' Vegh-Neubrandt, 1974 References Bivalve families Prehistoric mollusc families Devonian first app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bivalve Superfamilies
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bivalves have no head and they lack some usual molluscan organs, like the radula and the odontophore. They include the clams, oysters, cockles, mussels, scallops, and numerous other families that live in saltwater, as well as a number of families that live in freshwater. The majority are filter feeders. The gills have evolved into ctenidia, specialised organs for feeding and breathing. Most bivalves bury themselves in sediment, where they are relatively safe from predation. Others lie on the sea floor or attach themselves to rocks or other hard surfaces. Some bivalves, such as the scallops and file shells, can swim. The shipworms bore into wood, clay, or stone and live inside these substances. The shell of a bivalve is composed of calci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bivalve Taxonomy
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bivalves have no head and they lack some usual molluscan organs, like the radula and the odontophore. They include the clams, oysters, cockles, mussels, scallops, and numerous other families that live in saltwater, as well as a number of families that live in freshwater. The majority are filter feeders. The gills have evolved into ctenidia, specialised organs for feeding and breathing. Most bivalves bury themselves in sediment, where they are relatively safe from predation. Others lie on the sea floor or attach themselves to rocks or other hard surfaces. Some bivalves, such as the scallops and file shells, can swim. The shipworms bore into wood, clay, or stone and live inside these substances. The shell of a bivalve is composed of calcium c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
