Rotadiscus Explained

Rotadiscus is a genus of discoidal animal known from the Cambrian Chengjiang biota[1] and classified with the eldonioids.[2]

As with other eldonioids, it was originally thought to have been pelagic, but is now thought to be benthic.

A 2023 cladistic analysis based on new fossils places Rotadiscus, along with other eldonioids, as stem-group ambulacrarians in the clade Cambroernida.[3]

Notes and References

  1. 10.1016/S0016-6995(02)00025-6. Révision des animaux discoïdes cambriens Stellostomites eumorphus et Pararotadiscus guizhouensis de Chine du Sud. 2002. Zhu . M.. Zhao. Yuan-Long. Chen. Jun-Yuan. Geobios. 35. 2. 165–185.
  2. e9586. 3. 5. 2833208. PLOS ONE . D.. Soares. 10.1371/journal.pone.0009586. Tentaculate fossils from the Cambrian of Canada (British Columbia) and China (Yunnan) interpreted as primitive deuterostomes. Caron. 2010. 20221405 . D. . J.. Conway Morris. Shu . S.. Soares. Daphne. 2010PLoSO...5.9586C. free.
  3. Li . Yujing . Dunn . Frances S. . Murdock . Duncan J.E. . Guo . Jin . Rahman . Imran A. . Cong . Peiyun . Cambrian stem-group ambulacrarians and the nature of the ancestral deuterostome . Current Biology . May 10, 2023 . 10.1016/j.cub.2023.04.048 . 11 May 2023. free .

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