NMVPL92, Gawler River, Ulverstone (Cambrian to of Australia)

Where: Tasmania, Australia (41.2° S, 146.1° E: paleocoordinates 10.9° N, 155.6° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Isandula Road Formation (Cateena Group), Floran to Floran (507.0 - 504.0 Ma)

• The associated trilobite fauna of Penarosa, a ptychoparioid and agnostoids suggests a medial Middle Cambrian age. The horizon is similar in age to Locality 5 of Jago (1973) which is apparently just on the other side of the river from NMVPL92. Cateena Group (formation above Isandula Conglomerate) -- medial Middle Cambrian. PJW: Brock et al. (2000) note that this fauna is from the Acidusus atavus to Ptychagnostus punctuosus zone, which is the Isandula Road formation.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; mudstone

• The fossils are preserved as iron-stained external moulds in a fine mudstone which has undergone considerable soft-sediment deformation.

Size class: macrofossils

Preservation: mold/impression

Primary reference: P. A. Jell, C. F. Burrett, and M. R. Banks. 1985. Cambrian and Ordovician echinoderms from eastern Australia. Alcheringa 9(3):183-208 [P. Novack-Gottshall/P. Novack-Gottshall]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 193846: authorized by Phil Novack-Gottshall, entered by Phil Novack-Gottshall on 06.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

  - Nepeidae
Penarosa sp. Opik 1970 trilobite
 Ctenocystoida - Ctenocystidae
Ctenocystis jagoi n. sp. Jell et al. 1985
  - Stromatocystitidae
Cambraster sp. Cabibel et al. 1958
cf. C. tastudorum
Cambraster tastudorum n. sp. Jell et al. 1985