Biology:Rotadiscus
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.[3]
In addition to the type species R. grandis, two other Rotadiscus species have been proposed. The first is known only from one complete juvenile specimen and a few fragments, and was originally described as "Brzechowia sp." It remains without a formal species name, but has been transferred to Rotadiscus.[4] The species initially described as R. guizhouensis has since been reassigned to the genus Pararotadiscus.[2]
A 2023 cladistic analysis based on new fossils places Rotadiscus, along with other eldonioids, as stem-group ambulacrarians in the clade Cambroernida.[5]
References
- ↑ Zhu, Mao-Yan; Zhao, Yuan-Long; Chen, Jun-Yuan (2002-03-01). "Revision of the Cambrian discoidal animals Stellostomites eumorphus and Pararotadiscus guizhouensis from South China" (in en). Geobios 35 (2): 165–185. doi:10.1016/S0016-6995(02)00025-6. ISSN 0016-6995. Bibcode: 2002Geobi..35..165Z. https://www.sciencedirect.com/science/article/pii/S0016699502000256.
- ↑ 2.0 2.1 Cite error: Invalid
<ref>tag; no text was provided for refs namedSchroeder2018 - ↑ Dzik, Jerzy; Zhao, Yuanlong; Zhu, Maoyan (1997). "Mode of life of the middle Cambrian eldonioid lophophorate Rotadiscus". Palaeontology 40 (2): 385–396. https://www.palass.org/publications/palaeontology-journal/archive/40/2/article_pp385-396. Retrieved 28 December 2024.
- ↑ Masiak, M.; Żylińska, A. (1994). "Burgess Shale-type fossils in Cambrian sandstones of the Holy Cross Mountains". Acta Palaeontologica Polonica 39 (4): 329–340. https://www.app.pan.pl/archive/published/app39/app39-329.PDF. Retrieved 28 December 2024.
- ↑ Li, Yujing; Dunn, Frances S.; Murdock, Duncan J.E.; Guo, Jin; Rahman, Imran A.; Cong, Peiyun (May 10, 2023). "Cambrian stem-group ambulacrarians and the nature of the ancestral deuterostome". Current Biology 33 (12): 2359–2366.e2. doi:10.1016/j.cub.2023.04.048. PMID 37167976. Bibcode: 2023CBio...33E2359L.
Wikidata ☰ Q124439768 entry
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