Silver Gully, RA7 [Yarrimie Fm] (Devonian of Australia)

Where: Queensland, Australia (31.8° S, 151.7° E: paleocoordinates 23.1° S, 155.4° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Yarrimie Formation (Tamworth Group), Frasnian (382.7 - 372.2 Ma)

• STRATIGRAPHIC RELATIONS: From the Yarrimie Fm of the Tamworth Group. AGE: Pragian, on the basis of geochemical and biostratigraphic dating; RA7, Stigmosphaerostylus horrida radiolarian assemblage. STRATIGRAPHIC POSITION: From unknown position within the Gamilaroi terrane.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

• SPECIFIC LITHOLOGY: Not reported in text. LITHIFICATION: Lithified, assumed on the basis of sample preparation techniques.

Size class: microfossils

Collected by Aitchison

• COLLECTOR: J. C. Aitchison and others. REPOSITORY: Hong Kong University, Department of Earth Sciences.

Primary reference: J. C. Aitchison, A. M. Davis, J. M. C. Stratford and F. C. P. Spiller. 1999. Lower and Middle Devonian Radiolarian Biozonation of the Gamilaroi Terrane New England Orogen, Eastern Australia. Micropaleontology 45(2):138-162 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 90993: authorized by Austin Hendy, entered by Austin Hendy on 28.08.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Representative for radiolarians. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications.
Protozoa
 Entactinaria - Palaeoscenidiidae
Palaeoscenidium cladophorum Deflandre 1953 radiolarian
 Entactinaria - Entactiniidae
? Trilonche echinata Hinde 1899 radiolarian
 Albaillellaria - Ceratoikiscidae
Helenifore laticlavium Nazarov and Ormiston 1983 radiolarian