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Geoplana Aymara
''Geoplana'' is a genus of land planarians found in South America. Taxonomic history The genus ''Geoplana'' was erected in 1857 by William Stimpson and included most land planarians with several eyes distributed along the body.Stimpson, W. (1857). ''Prodromus descriptionis animalium evertebratorum quæ in Expeditione ad Oceanum, Pacificum Septentrionalem a Republica Federata missa, Johanne Rodgers Duce, observavit er descripsit. Pars I. Turbellaria Dendrocœla.'' Proceedings of the Academy of Natural Sciences of Philadelphia. 9:19-31. Species with only two eyes were placed in the genus ''Rhynchodemus'', while species with a crescent-shaped head were placed in ''Bipalium''. In the same year, apparently unaware of Stimpson's paper, the naturalist Max Schultze, based on published information and new species collected in Brazil by the naturalist Fritz Müller, also erected a genus named ''Geoplana'', but included all land planarians in it.Schultze, M. and Müller, F. (1857). ''Beit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cratera (genus)
''Cratera'' is a genus of land planarians found in South America. Description The genus ''Cratera'' is characterized by having a leaf-shaped body. Most species are between 3 and 7 cm long. The hundreds of eyes distributed along the body are monolobulated, i.e., simple and circular. The copulatory apparatus has a permanent conical penis occupying the entire male cavity. The final portion of the ejaculatory duct, the channel that guides sperm through the penis, has an expanded cavity that resembles a volcanic crater. It is very similar to the related genus ''Obama'', the main difference being the presence of trilobulated eyes in the latter. Etymology The name ''Cratera'' is derived from the Latin word ''crater'' and refers to the cavity in the penis that resembles a volcanic crater A volcanic crater is an approximately circular depression in the ground caused by Volcano, volcanic activity. It is typically a bowl-shaped feature containing one or more vents. During Typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geoplana Caya
''Geoplana'' is a genus of land planarians found in South America. Taxonomic history The genus ''Geoplana'' was erected in 1857 by William Stimpson and included most land planarians with several eyes distributed along the body.Stimpson, W. (1857). ''Prodromus descriptionis animalium evertebratorum quæ in Expeditione ad Oceanum, Pacificum Septentrionalem a Republica Federata missa, Johanne Rodgers Duce, observavit er descripsit. Pars I. Turbellaria Dendrocœla.'' Proceedings of the Academy of Natural Sciences of Philadelphia. 9:19-31. Species with only two eyes were placed in the genus ''Rhynchodemus'', while species with a crescent-shaped head were placed in ''Bipalium''. In the same year, apparently unaware of Stimpson's paper, the naturalist Max Schultze, based on published information and new species collected in Brazil by the naturalist Fritz Müller, also erected a genus named ''Geoplana'', but included all land planarians in it.Schultze, M. and Müller, F. (1857). ''Beit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incertae Sedis
' () or ''problematica'' is a term used for a taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred to as "enigmatic taxa". In the system of open nomenclature, uncertainty at specific taxonomic levels is indicated by ' (of uncertain family), ' (of uncertain suborder), ' (of uncertain order) and similar terms. Examples *The fossil plant '' Paradinandra suecica'' could not be assigned to any family, but was placed ''incertae sedis'' within the order Ericales when described in 2001. * The fossil '' Gluteus minimus'', described in 1975, could not be assigned to any known animal phylum. The genus is therefore ''incertae sedis'' within the kingdom Animalia. * While it was unclear to which order the New World vultures (family Cathartidae) should be assigned, they were placed in Aves ''incertae sedis''. It was later agreed to place them in a separate order, Cathartiformes. * Bocage's longbill, ''Motacilla boc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
