Sample 7430, Loc. 1, Thorntonia [Inca Fm] (Cambrian of Australia)

Also known as Section 423 (Shergold & Southgate, 1986)

Where: Queensland, Australia (19.5° S, 138.9° E: paleocoordinates 26.8° N, 172.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Ptychagnostus atavus trilobite zone, Inca Formation, Floran (504.5 - 503.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Inca Fm, which is a correlative of the CUrrant Brush Lmst, and overlies the Thorntonia Lmst and Beetle Creek Fm (Middle Cambrian), and is overlain by the V Creek Lmst (Middle Cambrian). AGE: Floran; Ptychagnostus atavus trilobite zone. STRATIGRAPHIC POSITION: From the eighth concretion layer from the bottom, in a 15 m thick section (10 concretionary layers).

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary carbonate

• SPECIFIC LITHOLOGY: Carbonate concretions. LITHIFICATION: Lithified, on the basis of facies description and sample preparation.

Size class: macrofossils

Preservation: concretion

Collection methods: bulk,

• COLLECTOR: Not stated in text, but presumably the authors. REPOSITORY: Not stated in text.

Primary reference: M.-Z. Won and R. Below. 1999. Cambrian Radiolaria from the Georgina Basin, Queensland, Australia. Micropaleontology 45(4):325-363 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90972: authorized by Austin Hendy, entered by Austin Hendy on 27.08.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for radiolarians, and with characteristic trilobites. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications.
Protozoa
 Archaeospicularia - Palaeospiculidae
Palaeospiculum arcussimile Won and Below 1999 radiolarian
 Archaeospicularia - Archeoentactiniidae
Fungomacula "sp. 1" Won and Below 1999 radiolarian
Fungomacula barbatula Won and Below 1999 radiolarian
Archeoentactinia tetractinia Won and Below 1999 radiolarian
Archeoentactinia hexactinia Won and Below 1999 radiolarian
Archeoentactinia incaensis Won and Below 1999 radiolarian
Spongomassa gigantea Won and Below 1999 radiolarian
Artiopoda
 Agnostida - Ptychagnostidae
Ptychagnostus atavus Tullberg 1880