Section AJX-M,sample AJX-M 266. 148.75 meters (Cambrian of Australia)

Also known as Ajax Limestone, Abadiella huoi trilobite zone

Where: South Australia, Australia (30.6° S, 138.3° E: paleocoordinates 17.1° N, 162.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Abadiella huoi trilobite zone, Ajax Limestone Formation, Atdabanian (520.0 - 516.0 Ma)

• A total of 5.6 m between 143.15-148.75 m above the base of the section AJX-M.

Environment/lithology: reef, buildup or bioherm; reef rocks

• Massive stromatolitic boundstones and dolomitised bioclastic and cryptalgal, laminated limestones

Size classes: mesofossils, microfossils

Primary reference: T. P. Topper, C. B. Skovsted, G. A. Brock and J. R. Paterson. 2011. The oldest bivalved arthropods from the early Cambrian of East Gondwana: Systematics, biostratigraphy and biogeography. Gondwana Research (19)310-326 [W. Kiessling/M. Krause]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 140341: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 08.03.2013, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

 Bradoriida -
Helcionelloida
 Helcionellida - Helcionellidae
Helcionella "sp. nov." Grabau and Shimer 1909