Rotadiscus

Rotadiscus is a genus of discoidal animal known from the Cambrian Chengjiang biota[2] and classified with the eldoniids.[3]

For the genus of snails, see Rotadiscus (gastropod).

Rotadiscus Temporal range: Early Cambrian – Middle Cambrian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Superphylum:	Deuterostomia
Stem group:	Ambulacraria
Clade:	†Cambroernida
Family:	†Rotadiscidae
Genus:	†Rotadiscus

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

References

1. CHEN, J-Y.; M-Y. ZHU; G. Q. ZHOU (1995). "The early Cambrian medusiform metazoan Eldonia from the Chengjiang Lagerstätte" (PDF). Acta Palaeontologica Polonica. 40: 213–244.
2. Zhu, M.; Zhao, Yuan-Long; Chen, Jun-Yuan (2002). "Révision des animaux discoïdes cambriens Stellostomites eumorphus et Pararotadiscus guizhouensis de Chine du Sud". Geobios. 35 (2): 165–185. doi:10.1016/S0016-6995(02)00025-6.
3. Caron, J.; Conway Morris, S.; Shu, D.; Soares, D. (2010). Soares, Daphne (ed.). "Tentaculate fossils from the Cambrian of Canada (British Columbia) and China (Yunnan) interpreted as primitive deuterostomes". PLoS ONE. 5 (3): e9586. Bibcode:2010PLoSO...5.9586C. doi:10.1371/journal.pone.0009586. PMC 2833208. PMID 20221405.