Sinoascus Paillatus
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''Sinoascus paillatus'' is an extinct species of
stem-group In phylogenetics, the crown group or crown assemblage is a collection of species composed of the living representatives of the collection, the most recent common ancestor of the collection, and all descendants of the most recent common ancestor. ...
ctenophore Ctenophora (; ctenophore ; ) comprise a phylum of marine invertebrates, commonly known as comb jellies, that inhabit sea waters worldwide. They are notable for the groups of cilia they use for swimming (commonly referred to as "combs"), and ...
, known from the
Maotianshan shales The Maotianshan Shales are a series of Cambrian, Early Cambrian deposits in the Chiungchussu Formation, famous for their ''Lagerstätte, Konservat Lagerstätten'', deposits known for the exceptional preservation of fossilized organisms or traces. ...
of
Yunnan Yunnan , () is a landlocked Provinces of China, province in Southwest China, the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is ...
, China. It is dated to
Cambrian Stage 3 Cambrian Stage 3 is the still unnamed third stage of the Cambrian. It succeeds Cambrian Stage 2 and precedes Cambrian Stage 4, although neither its base nor top have been formally defined. The plan is for its lower boundary to correspond approxi ...
and belongs to late Early
Cambrian The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ...
strata. Fossil specimens are poorly preserved, providing little details, if any at all, about the anatomy of the comb rows.


See also


Burgess shale ctenophores

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Fasciculus vesanus ''Fasciculus vesanus'' is an extinct species of stem-group ctenophores known from the Burgess Shale of British Columbia, Canada. It is dated to and belongs to middle Cambrian strata. The species is remarkable for its two sets of long and short ...
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Ctenorhabdotus capulus ''Ctenorhabdotus capulus'' is an extinct species of Ctenophora, ctenophore (or comb jelly), known from the Burgess shale in British Columbia, Canada. It is approximately 515 to 505 million years old and was equipped with 24 comb rows, three time ...
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Xanioascus canadensis ''Xanioascus canadensis'' is an extinct ctenophore, known from the Burgess Shale in British Columbia, Canada. The species, which is about 515 to 505 million years old, had 24 comb rows - in contrast to all modern forms which have only 8. Other ...
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Maotianshan shales ctenophores

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Maotianoascus octonarius ''Maotianoascus octonarius'' is an extinct species of stem-group ctenophore, known from the Chinese Maotianshan shales of Yunnan. It is dated to Cambrian Stage 3 and belongs to late Early Cambrian The Cambrian Period ( ; sometimes symbolized ...
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Stromatoveris psygmoglena ''Stromatoveris psygmoglena'' is a genus of basal petalonam from the Chengjiang deposits of Yunnan that was originally aligned with the fossil ''Charnia'' (strictly, the Charniomorpha) from the Ediacara biota. However, such an affinity is devel ...
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References

Maotianshan shales fossils Monotypic ctenophore genera Prehistoric ctenophore genera {{Ctenophore-stub