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Promachocrinus
''Promachocrinus'' is a genus of free-swimming, stemless Crinoid, crinoids. It was a Monotypic taxon, monotypic genus, with the only species in the genus being ''Promachocrinus kerguelensis,'' until the discovery of four new species, establishment of two others previously described and the transfer of another species to the genus in 2023. Known for being coldwater crinoids, members of ''Promachocrinus'' are typically found in the seas around Antarctica and surrounding island groups, including under the sea ice. Previously known for having 20 arms, two of the species now included in the genus have 10 arms. Many of the species are circum-Antarctic and can be difficult to tell apart without DNA sequencing. Species There are eight accepted species of ''Promachocrinus'' as of August 2023: * ''Promachocrinus fragarius'' McLaughlin, Wilson and Rouse 2023 * ''Promachocrinus joubini'' Vaney, 1910 * ''Promachocrinus kerguelensis'' Carpenter, 1879; Type species * ''Promachocrinus mawson ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Promachocrinus Mawsoni
''Promachocrinus'' is a genus of free-swimming, stemless Crinoid, crinoids. It was a Monotypic taxon, monotypic genus, with the only species in the genus being ''Promachocrinus kerguelensis,'' until the discovery of four new species, establishment of two others previously described and the transfer of another species to the genus in 2023. Known for being coldwater crinoids, members of ''Promachocrinus'' are typically found in the seas around Antarctica and surrounding island groups, including under the sea ice. Previously known for having 20 arms, two of the species now included in the genus have 10 arms. Many of the species are circum-Antarctic and can be difficult to tell apart without DNA sequencing. Species There are eight accepted species of ''Promachocrinus'' as of August 2023: * ''Promachocrinus fragarius'' McLaughlin, Wilson and Rouse 2023 * ''Promachocrinus joubini'' Vaney, 1910 * ''Promachocrinus kerguelensis'' Carpenter, 1879; Type species * ''Promachocrinus mawson ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |