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IRMNG taxon detailsCrassitubus Liu, Xiao, Yin, Zhou, Gao & Tang, 2008 †
marine,
fossil only
Liu, P.; Xiao, S.; Yin, C.; Zhou, C.; Gao, L.; Tang, F. (2008). Systematic description and phylogenetic affinity of tubular microfossils from the Ediacaran Doushantuo Formation at Weng'an, South China. <em>Palaeontology.</em> 51(2): 339-366., available online at https://doi.org/10.1111/j.1475-4983.2008.00762.x [details]
Palaeontology 51. page(s): 350 [details]
Taxonomic remark Tubular microfossil, tentatively assigned to Cnidaria in original description. From Sun et al., 2019: The phylogenetic...
Taxonomic remark Tubular microfossil, tentatively assigned to Cnidaria in original description. From Sun et al., 2019: The phylogenetic affinities of the Weng’an tubular microfossils [Crassitubus, Quadratitubus, Ramitubus and Sinocyclocyclicus] are far from resolved. They were originally interpreted as crinoid stems and arms, or components of the variably enigmatic Cambrian small shelly fauna. They have also been considered stem- or crown-cnidarians, filamentous cyanobacteria, or other alga (Xue et al., 1992; Li et al., 1997; Xiao et al., 2000; Chen et al., 2002; Liu et al., 2008, 2010; Cunningham et al., 2015). Xiao et al. (2000) compared these fossils with Ordovician tabulates and interpreted them as possible stem-cnidarians based principally on their tubular morphology and the presence of cross walls. ... We attribute these taxa to two principal groups: non-branching Sinocyclocyclicus, Quadratitubus and Crassitubus [interpreted as cyanobacteria], and dichotomously branching Ramitubus [which] likely represents a multicellular alga. [details]
IRMNG (2023). Crassitubus Liu, Xiao, Yin, Zhou, Gao & Tang, 2008 †. Accessed at: https://www.irmng.org/aphia.php?p=taxdetails&id=1471894 on 2024-06-08
original description
Liu, P.; Xiao, S.; Yin, C.; Zhou, C.; Gao, L.; Tang, F. (2008). Systematic description and phylogenetic affinity of tubular microfossils from the Ediacaran Doushantuo Formation at Weng'an, South China. <em>Palaeontology.</em> 51(2): 339-366., available online at https://doi.org/10.1111/j.1475-4983.2008.00762.x [details]
original description Palaeontology 51. page(s): 350 [details] basis of record www.organismnames.com (Jul 2012) / web search [details] verified source for family Sun, W.-C.; Yin, Z.-J.; Donoghue, P.; Liu, P.-J.; Shang, X.-D.; Zhu, M.-Y. (2019). Tubular microfossils from the Ediacaran Weng'an Biota (Doushantuo Formation, South China) are not early animals. <em>Palaeoworld.</em> 28(4): 469-477., available online at https://doi.org/10.1016/j.palwor.2019.04.004 note: refer note [details] current name source original publication [details] extant flag source inferred from original work (title) [details] habitat flag source web search (AJR) [details] From other sources
Taxonomic remark Tubular microfossil, tentatively assigned to Cnidaria in original description. From Sun et al., 2019: The phylogenetic affinities of the Weng’an tubular microfossils [Crassitubus, Quadratitubus, Ramitubus and Sinocyclocyclicus] are far from resolved. They were originally interpreted as crinoid stems and arms, or components of the variably enigmatic Cambrian small shelly fauna. They have also been considered stem- or crown-cnidarians, filamentous cyanobacteria, or other alga (Xue et al., 1992; Li et al., 1997; Xiao et al., 2000; Chen et al., 2002; Liu et al., 2008, 2010; Cunningham et al., 2015). Xiao et al. (2000) compared these fossils with Ordovician tabulates and interpreted them as possible stem-cnidarians based principally on their tubular morphology and the presence of cross walls. ... We attribute these taxa to two principal groups: non-branching Sinocyclocyclicus, Quadratitubus and Crassitubus [interpreted as cyanobacteria], and dichotomously branching Ramitubus [which] likely represents a multicellular alga. [details]
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