MMF/00.0. Angorichina station, east side of The Bunkers, 1 km S Balcoracana Cr. (Cambrian of Australia)

Also known as Wilkawillina Limestone, base of MMF, ~11 km east of Blinman

Where: South Australia, Australia (31.2° S, 138.9° E: paleocoordinates 16.8° N, 161.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Abadiella huoi trilobite zone, Mernmerna Formation, Atdabanian (521.0 - 516.0 Ma)

• Complete stratigraphy in Paterson and Brock (2007). Abadiella huoi Zone. The occurrence of Elicicola calva at the base of the MMF section is taken to represent the A. huoi Zone. This is further supported by the co-occurrence of the paterinid brachiopod Askepasma in the same horizon (i.e., MMF/0.0)

•This is informally called “Parara” but is Atdabanian equivalent.

• bed-level stratigraphic resolution

Environment/lithology: wackestone and packstone

• Based on Clarke’s (1990) depositional model, the Third Plain Creek Member of the Mernmerna Formation was deposited in anaerobic and dysaerobic zones of the lower slope.
• The Mernmerna Formation at section MMF is dominated by interbedded black turbiditic wackestone-packstone and laminated lime silt and mud with rare sandstone beds. Grain flow deposits are common and contain intraclasts, ooids, and peloids. Irregular and nodular bedding is relatively common and slump structures are also evident. (Paterson and Brock 2007)

Size classes: macrofossils, mesofossils, microfossils

• isolated sclerites; multisclerite fused composites

Preservation: original phosphate, original silica

Collection methods: acetic

Primary reference: C. B. Skovsted, G. A. Brock, J. R. Paterson, L. E. Holmer, and G. E. Budd. 2008. The scleritome of Eccentrotheca from the Lower Cambrian of South Australia: Lophophorate affinities and implications for tommotiid phylogeny. Geology 36(2):171-174 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96454: authorized by Pete Wagner, entered by Pete Wagner on 08.06.2010, edited by Hallie Street

Creative Commons license: CC BY (attribution)

Taxonomic list

• SAMP specimens
unclassified
  -
Hyolitha
 Hyolithida -
Parkula bounites3 Bengtson et al. 1990
Hyptiotheca karraculum3 Bengtson et al. 1990
 Orthothecida - Triplicatellidae
Triplicatella disdoma3 Conway Morris 1990
 Orthothecida - Circothecidae
Conotheca australiensis3 Bengtson et al. 1990
Brachiopoda
  -
Micrina etheridgei1 Tate 1892
Paterinata
 Paterinida - Cryptotretidae
Brachiopoda
  -
Eccentrotheca sp. Landing et al. 1980
 Mitrosagophora - Tommotiidae
Camenella reticulosa2 Bengtson et al. 1990
 Tommotiida - Lapworthellidae
Lapworthella fasciculata3 Bengtson et al. 1990
 Tommotiida -
Aculifera
  - Halkieriidae
Halkieria "sclerites"3 Poulsen 1967
Helcionelloida
 Helcionellida - Helcionellidae
"Mackinnonia rostrata" = Davidonia rostratum3, Pararaconus staitorum3
"Mackinnonia rostrata" = Davidonia rostratum3 Zhou and Xiao 1984
Pararaconus staitorum3 Bengtson et al. 1990
 Helcionellida - Rugaeconidae
Xianfengella yatesi3 Parkhaev 2001
 Pelagiellida - Pelagiellidae
Pelagiella madianensis3 Zhou and Xiao 1984
Bivalvia
 Fordillida - Fordillidae
Pojetaia runnegari3 Jell 1980 clam
Trilobita
 Redlichiida - Yunnanocephalidae
Elicicola calva1 trilobite
Siphonoconcha
 Tianzhushanelliformes - Tianzhushanellidae
Apistoconcha apheles3 Bengtson et al. 1990
Scyphozoa
 Anabaritida - Anabaritidae
Anabarites trymatus3 Bengtson et al. 1990 jellyfish
Dodecaactinella
  - Polyactinellidae
Coeloscleritophora
 Chancelloriida - Chancelloriidae
Chancelloria "spp."3 Walcott 1920
Aetholicopalla adnata
  -
Aetholicopalla adnata3 Bengston et al. 1990
Dailyatia
  - Kennardiidae
Dailyatia ajax
  - Kennardiidae
Dailyatia ajax3 Bischoff 1976