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Lyria (gastropod)
''Lyria'' is a genus of sea snails, marine gastropod molluscs in the family Volutidae. Description The shell is small to medium sized, solid, stocky to elongate-fusiform. The radula is uniserial with tricuspid teeth. The protoconchs are smooth. They can be large and globose with a short calcarella or small and regularly coiled. The teleoconch shows axial ribs, exceptionally with true shoulder nodules. The solid shell is ovately fusiform. The spire is acuminate. The whorls are longitudinally ribbed. The aperture is ovate. The columella shows numerous transverse plaits. The outer lip is simple and acute. Species Species within the genus ''Lyria'' include: * '' Lyria anna'' (Lesson, 1835) * '' Lyria beauii'' (Fischer & Bernardi, 1857) * '' Lyria boholensis'' Poppe, 1897 * '' Lyria bondarevi'' Bail & Poppe, 2004 * '' Lyria boucheti'' Bail & Poppe, 2004 * '' Lyria brianoi'' Poppe, 1999 * '' Lyria cassidula'' (Reeve, 1849) * '' Lyria cleaveri'' Morrison, 2008 * '' Lyria cloveriana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
