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Raphitoma Costellata
''Raphitoma costellata'' is an extinct species of sea snail, a marine gastropod mollusc in the family Raphitomidae Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet P. & Rocroi J.-P. (Ed.) (2005). "Classification and nomenclator of gastropod families". '' Malacologia'' 47(1-2). . 3 .... ;Subspecies: * † ''Raphitoma costellata bicristata'' A.E.M. Cossmann & G. Pissarro, 1913 * † ''Raphitoma costellata capellinii'' G.P. Deshayes, 1865 (synonym: ''Pleurotoma capellinii'' Deshayes, 1865; ''Raphitoma cappellinii'' (Deshayes, 1865)) * † ''Raphitoma costellata coptochetoides'' (Lamarck, 1804a) * † ''Raphitoma costellata pachycolpa'' Cossmann, 1889 Description Distribution Fossils of this extinct marine species were found in Eocene strata in France. References * Cossmann (M.) & Pissarro (G.), 1913 Iconographie complète des coquilles fossiles de l'Éocène des environs de Paris, t. 2, p. p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
