Paropsonemid

Paropsonemid
Temporal range: Early Cambrian–Early Devonian[1]
Scientific classification
Kingdom: Animalia
Stem group: Ambulacraria
Clade: Cambroernida
Family: Eldoniidae
Clade: Paropsonemida

The paropsonemids are problematic fossils known from the Early Cambrian to Devonian periods, which may be related to the Cambrian eldoniids.[2] They are typified by the Chengjiang genus Paropsonema.

References

  1. Conway Morris, S. (1993). "The fossil record and the early evolution of the Metazoa". Nature. 361 (6409): 219–225. Bibcode:1993Natur.361..219M. doi:10.1038/361219a0.
  2. D. Friend; A. Yu. Zhuravlev & I. A. Solov’ev (2002). "Middle Cambrian Eldonia from the Siberian Platform". Paleontological Journal. 36 (1): 20–24.


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