Paropsonemid

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

The paropsonemids are problematic fossils known from the Ordovician 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, and I. A. Solov’ev (2002). "Middle Cambrian Eldonia from the Siberian Platform". Paleontological Journal 36 (1): 20–24.
This article is issued from Wikipedia - version of the Tuesday, April 26, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.