Palaeoscolecid

Palaeoscolecida
Temporal range: Upper Early Cambrian–Ludfordian[1][2]
The Burgess Shale palaeoscolecid Scathascolex minor. Image from Smith (2015)[5][6]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Clade: Cycloneuralia
Class: †Palaeoscolecida
Conway Morris & Robinson, 1986
Families, genera and species
(sensu Harvey et al. 2010[3])[4]

See text

The palaeoscolecids are a group of extinct ecdysozoan worms resembling armoured priapulids. They are known from the Lower Cambrian[7] to the lower Ludfordian (late Silurian);[8][2] they are mainly found as disarticulated sclerites, but are also preserved in many of the Cambrian lagerstätten.[9] They take their name from the typifying genus Palaeoscolex.[8] Other genera include Cricocosmia from the Lower Cambrian Chengjiang biota.[10] Their taxonomic affinities within Ecdysozoa have been the subject of debate.

  1. ^ Wills, M. A. (1 April 1998). "Cambrian and Recent Disparity: the Picture from Priapulids". Paleobiology. 24 (2): 155–286. doi:10.1666/0094-8373(1998)024[0177:CARDTP]2.3.CO;2. JSTOR 2401237. S2CID 88647544.
  2. ^ a b Howard, Richard J.; Parry, Luke A.; Clatworthy, Innes; D'Souza, Leila; Edgecombe, Gregory D. (May 2024). "Palaeoscolecids from the Ludlow Series of Leintwardine, Herefordshire (UK): the latest occurrence of palaeoscolecids in the fossil record". Papers in Palaeontology. 10 (3). doi:10.1002/spp2.1558. ISSN 2056-2799.
  3. ^ Cite error: The named reference Harvey2010 was invoked but never defined (see the help page).
  4. ^ Ma, X.; Aldridge, R. J.; Siveter, D. J.; Siveter, D. J.; Hou, X.; Edgecombe, G. D. (March 2014). "A New Exceptionally Preserved Cambrian Priapulid from the Chengjiang Lagerstätte". Journal of Paleontology. 88 (2): 371–384. Bibcode:2014JPal...88..371M. doi:10.1666/13-082. S2CID 85627132.
  5. ^ Smith, Martin R. (2015). "A palaeoscolecid worm from the Burgess Shale". Palaeontology. 58 (6): 973–979. Bibcode:2015Palgy..58..973S. doi:10.1111/pala.12210. S2CID 86747103.
  6. ^ Smith, Martin R. (2015). "Lagerstatten". Data from: A palaeoscolecid worm from the Burgess Shale. Dryad Digital Repository. Dryad. doi:10.5061/dryad.cf493. hdl:10255/dryad.92916.
  7. ^ Andrey Y. Ivantsov & Ryszard Wrona (2004). "Articulated palaeoscolecid sclerite arrays from the Lower Cambrian of eastern Siberia" (PDF). Acta Geologica Polonica. 54 (1): 1–22. Archived from the original (PDF) on 2011-07-16. Retrieved 2009-06-03.
  8. ^ a b Xianguang Hou; Richard Aldridge; Jan Bergström; David Siveter; Derek Siveter (2004). The Cambrian fossils of Chengjiang, China: the flowering of early animal life. Wiley-Blackwell. p. 233. ISBN 978-1-4051-0673-3.
  9. ^ Zhu, M.; Babcock, L.; Steiner, M. (2 May 2005). "Fossilization modes in the Chengjiang Lagerstätte (Cambrian of China): testing the roles of organic preservation and diagenetic alteration in exceptional preservation". Palaeogeography, Palaeoclimatology, Palaeoecology. 220 (1–2): 31–37. Bibcode:2005PPP...220...31Z. doi:10.1016/j.palaeo.2003.03.001.
  10. ^ Jian Han; Jianni Liu; Zhifei Zhang; Xinglian Zhang; Degan Shu (2007). "Trunk ornament on the palaeoscolecid worms Cricocosmia and Tabelliscolex from the Early Cambrian Chengjiang deposits of China" (PDF). Acta Palaeontologica Polonica. 52 (2): 423–431.