File:Rotadiscus guizhouensis (fossil eldonioid) (Kaili Formation, Middle Cambrian; quarry between Balang & Dunzhou, Guizhou Province, China).jpg

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English: Rotadiscus guizhouensis Zhao & Zhu, 1994 - fossil eldonioid in shale from the Cambrian of China.

This fossil, also known as Pararotadiscus guizhouensis, is from the Kaili Lagerstätte, a soft-bodied fossil deposit in the Middle Cambrian of South China. The Kaili deposit contains typical Cambrian shelly and skeletonized fossils (e.g., polymeroid and agnstoid trilobites, brachiopods, hyoliths, sponges, molluscs, bradoriids, echinoderms, chancelloriids) and a suite of nonmineralizing organisms - principally arthropods (nektaspids, xandarellids, marrellomorphs, fuxianhuiids, large bivalved arthropods, and anomalocaridids). Other soft-bodied fossils in the Kaili include cnidarians, priapulid worms, palaeoscolecidan worms, polychaete worms, lobopods, algae, bacteria, protists, and enigmatic organisms.

Rotadiscus is a discoidal fossil with a U-shaped gut. It is classified as an eldonioid, an extinct group of organisms whose upper-level taxonomy is uncertain. The taxon "Cambroernida" is sometimes applied to eldonioids and other inferred related fossils.

Classification: Animalia, Incertae Sedis, Eldonioidea (Lophophorata? Echinodermata?)

Stratigraphy: Kaili Lagerstätte, middle Kaili Formation, lower Oryctocephalus indicus Interval-zone (= equivalent to the lower Amgan Stage of Siberia), lower Middle Cambrian

Locality: hilltop quarry between the villages of Balang and Dunzhou, west-northwest of the town of Gedong, Taijiang County, eastern Guizhou Province, southern China
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Source https://www.flickr.com/photos/47445767@N05/50981597102/
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/50981597102. It was reviewed on 26 February 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

26 February 2021

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current22:41, 26 February 2021Thumbnail for version as of 22:41, 26 February 20212,674 × 1,876 (4.15 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50981597102/ with UploadWizard

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