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Archaeopriapulida

Class of marine worms From Wikipedia, the free encyclopedia

Archaeopriapulida
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Archaeopriapulida is a group of priapulid worms known from Cambrian lagerstätte.[3] The group is closely related to, and very similar to, the modern Priapulids.[4] It is unclear whether it is mono- or polyphyletic.[5] Despite a remarkable morphological similarity to their modern cousins,[6] they fall outside of the priapulid crown group, which is not unambiguously represented in the fossil record until the Carboniferous.[7] In addition to well-preserved body fossils, remains of several archaeopriapulid taxa are known to have been preserved primarily as organic microfossils, such as isolated scalids and pharyngeal teeth.[8][9][10] They are probably closely related or paraphyletic to the palaeoscolecids; the relationship between these basal worms is somewhat unresolved.[5]

Quick Facts Scientific classification, Species ...
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Species

  • Genus Acosmia Chen & Zhoi 1997 (Chengjiang deposits)
  • Genus Archotuba Hou et al. 1999 (possibly a Cnidarian) (Chengjiang deposits)[11]
  • Genus Baltiscalida Slater et al. 2017
    • Baltiscalida njorda Slater et al. 2017
  • Genus Eopriapulites Liu & al 2014[12]
  • Genus Eximipriapulus Ma et al. 2014 (Chengjiang deposits) [13]
  • Genus Lagenula Luo & Hu 1999 nomen dubium (Chengjiang deposits)[6]
    • Lagenula striolata Luo & Hu 1999 nomen dubium
  • Genus Laojieella Han et al. 2006 (Chengjiang deposits)[14]
    • Laojieella thecata Han et al. 2006
  • Genus Lecythioscopa Conway Morris 1977 (Burgess Shale)
  • Genus Oligonodus Luo & Hu 1999 nomen dubium (Chengjiang deposits)[6]
    • Oligonodus specialis Luo & Hu 1999 nomen dubium
  • Genus Sandaokania Luo & Hu 1999 nomen dubium (Chengjiang deposits)[6]
    • Sandaokania latinodosa Luo & Hu 1999 nomen dubium
  • Genus Singuuriqia Peel 2017 (Sirius Passet)[15]
    • Singuuriqia simoni Peel 2017
  • Genus Sullulika Peel & Willman, 2018[16]
    • Sullulika broenlundi Peel & Willman, 2018
  • Genus Vladipriapulus Ivantsov et al. 2005 (Sinsk Formation) [17]
    • Vladipriapulus malakhovi Ivantsov et al. 2005
  • Genus Xishania Hong 1981
    • Xishania fusiformis Hong 1981
    • Xishania jiangxiensis Hong 1988
  • Genus Paratubiluchus Han, Shu, Zhang et Liu, 2004 (Chengjiang deposits)
    • Paratubiluchus bicaudatus Han, Shu, Zhang et Liu, 2004
  • Genus Xiaoheiqingella Hu 2002
    • Xiaoheiqingella peculiaris Hu 2002 [Yunnanpriapulus halteroformis Huang et al. 2004[18]][19] (Chengjiang deposits)
  • Genus Priapulites Schram 1973 (Mazon Creek)
  • Family Palaeopriapulitidae Hou et al. 1999
  • Family Selkirkiidae Conway Morris 1977 (stem Palaeoscolecida)[22]
    • Genus Selkirkia Walcott 1911
      • Selkirkia elongata Luo & Hu 1999 (Chengjiang deposits)
      • Selkirkia columbia Walcott 1911 (Burgess Shale)
      • Selkirkia pennsylvanica Resser & Howell 1938
      • Selkirkia spencei Resser 1939
      • Selkirkia tsering Nanglu & Ortega-Hernández 2024
      • Selkirkia willoughbyi Conway Morris & Robison 1986
  • Order Ancalagonida Adrianov & Malakhov 1995 (stem Scalidophora)[22]
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References

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