Chatsworth Plains D489 (Cambrian of Australia)

Where: Queensland, Australia (21.9° S, 140.3° E: paleocoordinates 25.0° N, 174.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Wentsuia iota - Rhaptagnostus apsis trilobite zone, Chatsworth Formation, Iverian (494.0 - 489.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, silty limestone and lithified, shelly/skeletal, silty grainstone

• "rocks were deposited in high energy shallow subtidal, intertidal and possibly aeolian environments"
• "Sandy ripple-marked limestone and intraclastic limestone; silty clast skeletal grainstone with elongate clasts of silty mudstone."

Size class: macrofossils

Preservation: mold/impression

Collected by Shergold, F. de Keyser, C.E. Murrary, R. Thieme in 1968

Collection methods: surface (in situ), mechanical,

Primary reference: J. H. Shergold. 1980. Late Cambrian trilobites from the Chatsworth Limestone, western Queensland. Bureau of Mineral Resources, Geology and Geophysics Bulletin 186:1-108 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 228221: authorized by Melanie Hopkins, entered by Melanie Hopkins on 23.11.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Lingulata
 Lingulida - Obolidae
Obolidae indet.
Obolidae indet. King 1846
Trilobita
 Asaphida - Ceratopygidae
Haniwoides varia
Haniwoides varia Shergold 1980 trilobite
 Olenida - Idahoiidae
Maladioidella doylei
Maladioidella doylei Shergold 1980 trilobite
 Olenida - Aphelaspidae
Taenicephalites pleurus
Artiopoda
 Agnostida - Diplagnostidae
Pseudagnostus mortensis