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- W2951053968 abstract "Walde, D.H.-G., Weber, B., Erdtmann, B.-D. & Steiner, M. 20 June 2019. Taphonomy of Corumbella werneri from the Ediacaran of Brazil: sinotubulitid tube or conulariid test? Alcheringa 43, 335–350. ISSN 0311-5518The problematic late Ediacaran tubular fossil Corumbella werneri is revised based on two-dimensional compressions, and new three-dimensionally preserved specimens from the Tamengo Formation of the Corumbá Region in Mato Grosso do Sul, west-central Brazil. These fossils represent some of the oldest skeletonized metazoans and were originally described from diagenetically compacted tubes that prompted conflicting interpretations as either Ediacaran coronate scyphozoan exoskeletons, or conulariid tests. Our new material from Corumbá permits a morphological and taphonomic revision of C. werneri, which we suggest was probably a calcareous sinotubulitid. Corumbella werneri closely resembles the late Ediacaran Sinotubulites from South China, as well as the Silurian worm tube Eoalvinellodes, which has similar exterior ornamentation. Ultrastructurally, the tubes of C. werneri exhibit a coarse sparitic microtexture, which we attribute to diagenetic alteration. Partial flexibility also supports interpretation as an originally weakly calcified, or entirely organic exoskeleton. We therefore reject placement of C. werneri as a conulariid scyphozoan, and instead, advocate possible relationships with marine annelids.Detlef Hans-Gert Walde [walde.detlef@gmail.com], University of Brasília, Institute of Geosciences, Brasília-DF, Brazil; Bernd Weber [bweber@zedat.fu-berlin.de], Freie Universität Berlin, Institut für Geologische Wissenschaften, Malteserstr. 74–100, D-12249 Berlin, Germany; Bernd-D. Erdtmann [berni1739@gmail.com], 1165 N Mountain View Road, Apache Junction, AZ 85119, USA; *Michael Steiner [Michael.Steiner@FU-Berlin.de], Freie Universität Berlin, Institut für Geologische Wissenschaften (Haus D), Malteserstr. 74–100, D-12249 Berlin, Germany." @default.
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- W2951053968 date "2019-06-20" @default.
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- W2951053968 title "Taphonomy of<i>Corumbella werneri</i>from the Ediacaran of Brazil: sinotubulitid tube or conulariid test?" @default.
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- W2951053968 doi "https://doi.org/10.1080/03115518.2019.1615551" @default.
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