Markuelia

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Markuelia
Temporal range: Early Cambrian–Early Ordovician[1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Total group: Scalidophora
Genus: Markuelia
Species
  • M. secunda Val’kov
  • M. hunanensis Dong and Donoghue
  • M. lauriei Haug et al.
  • M. spinulifera Dong et al., 2010
  • M. waloszeki Dong et al., 2010

Markuelia is a genus of fossil worm-like bilaterian animals allied to Ecdysozoa and known from strata of Lower Cambrian to Lower Ordovician age containing five species.

An advanced

Lower Cambrian
animals.

The features observed indicate that the genus had a mouth surrounded by a ring of teeth, an

alimentary canal, and an anus
.

However the characters preserved are inconclusive regarding the genus' taxonomic affinity; it can at best be placed in the scalidophoran total group, since it is currently impossible to ally it with the

Priapulids or other scalidophora.[1]

Further reading

Zhang, X. G.; Pratt, B. R.; Shen, C. (2011). "Embryonic Development of a Middle Cambrian (500 Myr Old) Scalidophoran Worm".

S2CID 85723012
. Duan, B.; Dong, X. -P.; Donoghue, P. C. J. (2012). "New palaeoscolecid worms from the Furongian (upper Cambrian) of Hunan, South China: Is Markuelia an embryonic palaeoscolecid?".
S2CID 53485143
.

References

  1. ^
    S2CID 53483146
    .
  2. ISSN 0028-0836
    . Retrieved 17 December 2023.
  3. ^ "2017: Jesus Lozano Fernandez - New Paper | School of Biological Sciences | University of Bristol".


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