Archaeopriapulida

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Class of marine worms

title: "Archaeopriapulida" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["priapulida"] description: "Class of marine worms" topic_path: "general/priapulida" source: "https://en.wikipedia.org/wiki/Archaeopriapulida" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Class of marine worms ::

| image = Ottoia burrowing.jpg | image_caption = Reconstruction of the archaeopriapulid Ottoia; Haplophrentis | fossil_range = | taxon = Archaeopriapulida | authority = | subdivision_ranks = Species | subdivision_ref = | subdivision = See text

Archaeopriapulida is a group of priapulid worms known from Cambrian lagerstätte. The group is closely related to, and very similar to, the modern priapulids. It is unclear whether it is mono- or polyphyletic. Despite a remarkable morphological similarity to their modern cousins, they fall outside of the priapulid crown group, which is not unambiguously represented in the fossil record until the Carboniferous. 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. They are probably closely related or paraphyletic to the palaeoscolecids; the relationship between these basal worms is somewhat unresolved.

Species

References

References

  1. (2015). "The macro- and microfossil record of the Cambrian priapulid ''Ottoia''". Palaeontology.
  2. (2015). "The macro- and microfossil record of the Cambrian priapulid ''Ottoia''". Palaeontology.
  3. (1979). "The Burgess Shale (Middle Cambrian) Fauna". Annual Review of Ecology and Systematics.
  4. (1983). "Class Seticoronaria and Phylogeny of the Phylum Priapulida". Zoologica Scripta.
  5. Wills, M. A.. (1 April 1998). "Cambrian and Recent Disparity: the Picture from Priapulids". Paleobiology.
  6. (2000). "A critical reappraisal of the fossil record of the bilaterian phyla". Biological Reviews of the Cambridge Philosophical Society.
  7. Slater, Ben J.. (January 2017). "A cryptic record of Burgess Shale-type diversity from the early Cambrian of Baltica". Palaeontology.
  8. Smith, Martin R.. (July 2015). "The macro‐ and microfossil record of the Cambrian priapulid Ottoia". Palaeontology.
  9. Wernström, Joel Vikberg. (2023-08-12). "Geometric morphometrics of macro- and meiofaunal priapulid pharyngeal teeth provides a proxy for studying Cambrian "tooth taxa"". Zoomorphology.
  10. (2012-12-21). "Nematomorpha, Priapulida, Kinorhyncha, Loricifera".
  11. (2014). "The oldest known priapulid-like scalidophoran animal and its implications for the early evolution of cycloneuralians and ecdysozoans". Evolution & Development.
  12. (2006). "A new theca-bearing Early Cambrian worm from the Chengjiang Fossil Lagerstätte, China". Alcheringa: An Australasian Journal of Palaeontology.
  13. (2017). "Feeding behaviour of a new worm (Priapulida) from the Sirius Passet Lagerstätte (Cambrian Series 2, Stage 3) of North Greenland (Laurentia)". Palaeontology.
  14. (2018). "The Buen Formation (Cambrian Series 2) biota of North Greenland". Papers in Palaeontology.
  15. Ivantsov, A. I., Zhuravlev, A. I., Krasilov, V. A., Leguta, A. V., Melnikova, L. M., Urbanek, A., et al. (2005). ''Unique Sinsk Localities of Early Cambrian Organisms (Siberia Platform)''. Moscow: Nauka. Rossiyskaya Akademia Nauk, 143. [in Russian].
  16. (2004). "Recent Priapulidae and their Early Cambrian ancestors: Comparisons and evolutionary significance". Geobios.
  17. (2004). "The earliest-known ancestors of Recent Priapulomorpha from the Early Cambrian Chengjiang Lagerstätte". Chinese Science Bulletin.
  18. (2014). "A Chengjiang-type fossil assemblage from the Hongjingshao Formation (Cambrian Stage 3) at Chenggong, Kunming, Yunnan". Chinese Science Bulletin.
  19. (July 2017). "Evidence of Priapulid Scavenging from the Early Cambrian Chengjiang Deposits, Southern China". PALAIOS.
  20. Haaramo, Mikko. (2003). "Scalidophora – †palaeoscolecids, priapulids, mud dragons and brush heads".
  21. (2004). "Anatomy and lifestyles of Early Cambrian priapulid worms exemplified by ''Corynetis'' and ''Anningvermis'' from the Maotianshan Shale (SW China)". Lethaia.
  22. (2014). "A New Exceptionally Preserved Cambrian Priapulid from the Chengjiang Lagerstätte". Journal of Paleontology.
  23. (2012). "A new priapulid assemblage from the early Cambrian Guanshan fossil Lagerstätte of SW China". Bulletin of Geosciences.

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priapulida