Chatsworth Plains D124 (Cambrian of Australia)

Where: Queensland, Australia (22.0° S, 140.3° E: paleocoordinates 24.9° 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)

• group of beds-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, peloidal, shelly/skeletal, sandy grainstone

• "rocks were deposited in high energy shallow subtidal, intertidal and possibly aeolian environments"

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 228218: authorized by Melanie Hopkins, entered by Melanie Hopkins on 23.11.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Brachiopoda
  -
Brachiopoda indet. Cuvier 1805
Trilobita
 Corynexochida - Kaolishaniidae
Peichiashania prima Shergold 1980 trilobite
 Corynexochida - Leiostegiidae
Lotosoides bathyora n. sp. Shergold 1980 trilobite
 Ptychopariida -
Guizhoucephalina sp. Chien 1961 trilobite
 Asaphida - Ceratopygidae
Haniwoides varia Shergold 1980 trilobite
 Asaphida - Asaphidae
 Olenida - Dokimokephalidae
Lorrettina depressa Shergold 1980 trilobite
 Olenida - Idahoiidae
Maladioidella doylei Shergold 1980 trilobite
 Olenida - Aphelaspidae
Taenicephalites plerus Shergold 1980 trilobite
  - Changshaniidae
Wentsuia iota Shergold 1980 trilobite
Artiopoda
 Agnostida - Agnostidae
Connagnostus aversus n. sp. Shergold 1980
Neoagnostus felix n. sp. Shergold 1980
 Agnostida - Diplagnostidae
"Rhaptagnostus cf. impressus" = Pseudagnostus
Rhaptagnostus apsis Shergold 1980