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Lasiograptidae
Lasiograptidae is an extinct family of graptolites. Genera List of genera from Maletz (2014): *†''Arachniograptus'' Ross & Berry, 1963 *†''Archiretiolites'' Eisenack, 1935 *†''Brevigraptus'' Mitchell, 1988 *†''Hallograptus'' Lapworth, 1876a *†''Lasiograptus'' Lapworth, 1873 *†''Neurograptus'' Elles & Wood, 1908 *†''Nymphograptus'' Elles & Wood, 1908 *†''Orthoretiolites'' Whittington, 1954 *†''Paraplegmatograptus'' Mu & Lin, 1984 *†''Phormograptus'' Whittington, 1955 *†''Pipiograptus'' Whittington, 1955 *†''Plegmatograptus'' Elles & Wood, 1908 *†''Sunigraptus'' Mu, 1993 in Mu et al. (1993) *†''Tysanograptus'' Elles & Wood, 1908 *†''Yangzigraptus'' Mu, 1983 in Yang et al. (1983) *†''Yinograptus'' Mu, 1962 in Mu & Chen (1962) References Graptolites Prehistoric hemichordate families {{Hemichordate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graptolites
Graptolites are a group of colonial animals, members of the subclass Graptolithina within the class Pterobranchia. These filter-feeding organisms are known chiefly from fossils found from the Middle Cambrian (Miaolingian, Wuliuan) through the Lower Carboniferous ( Mississippian). A possible early graptolite, ''Chaunograptus'', is known from the Middle Cambrian. Recent analyses have favored the idea that the living pterobranch ''Rhabdopleura'' represents an extant graptolite which diverged from the rest of the group in the Cambrian. Fossil graptolites and ''Rhabdopleura'' share a colony structure of interconnected zooids housed in organic tubes (theca) which have a basic structure of stacked half-rings (fuselli). Most extinct graptolites belong to two major orders: the bush-like sessile Dendroidea and the planktonic, free-floating Graptoloidea. These orders most likely evolved from encrusting pterobranchs similar to ''Rhabdopleura''. Due to their widespread abundance, plantkonic l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
