Restudied Cyclomedusa plexus, Rawnsley Quartzite - Weiguo, 1986 (Ediacaran of Australia)

Where: South Australia, Australia (30.0° S, 138.0° E: paleocoordinates 16.6° N, 165.2° W)

• basin-level geographic resolution

When: White Sea other zone, Edicara Member (Rawnsley Quartzite Formation), Ediacaran (635.0 - 541.0 Ma)

• Stratigraphy shows wavey bedding/regular cycles of intertidal sedimentation. The fossil remains are embedded by fine silts with some found on bases of weathered slabs and some on freshly exposed lower-bedding plane surfaces.

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified sandstone

• the spriggia wadeae occur on the upper bedding plane of purplish medium-grained, feldspathic sandstone slabs. note: other species are described as occurring in quartzite slabs.

Preservation: cast

Collection methods: Collection is a compilation of 30 years of collecting by Australian geologists and paleontologists of the Department of Geology, University of Adelaide and the South Australian Museum.

Primary reference: S. Weiguo. 1986. Precambrian mudusoids:the Cyclomedusa plexus and Cyclomedusa-like pseudofossils. Precambrian Research 31:325-360 [M. Patzkowsky/P. Borkow]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 6852: authorized by Mark Patzkowsky, entered by Phil Borkow on 31.03.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Aspidella terranovica
"Cyclomedusa plana" = Aspidella terranovica, "Cyclomedusa davidi" = Aspidella terranovica, "Spriggia wadeae n. sp." = Aspidella terranovica, "Cyclomedusa gigantea" = Aspidella terranovica
"Cyclomedusa plana" = Aspidella terranovica Billings 1872
"Cyclomedusa davidi" = Aspidella terranovica Billings 1872
"Spriggia wadeae n. sp." = Aspidella terranovica Billings 1872
"Cyclomedusa gigantea" = Aspidella terranovica Billings 1872