Lily Creek Section B54a (Cambrian of Australia)

Where: Queensland, Australia (22.0° S, 140.3° E: paleocoordinates 24.9° N, 174.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Peichiashania secunda - Prochuangia glabella trilobite zone, Chatsworth Formation, Iverian (494.0 - 489.5 Ma)

• Should be Jiangshanian

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, pyritic, peloidal, sandy grainstone and lithified lime mudstone

• "rocks were deposited in high energy shallow subtidal, intertidal and possibly aeolian environments"
• "Interlaminated sandy pelletal grainstone and shaly limestone; minor disseminated pyrite and some muscovite."

Size class: macrofossils

Preservation: mold/impression

Collected by BMR field party in 1957-1960

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 228044: authorized by Melanie Hopkins, entered by Melanie Hopkins on 18.11.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Asaphida - Ceratopygidae
Cermatops sp., Cermatops vieta
Cermatops sp. Shergold 1980 trilobite
Cermatops vieta Shergold 1980 trilobite
 Olenida - Idahoiidae
Maladioidella doylei n. sp.
Maladioidella doylei n. sp. Shergold 1980 trilobite
 Corynexochida - Leiostegiidae
Prochuangia glabella n. sp.
Prochuangia glabella n. sp. Shergold 1980 trilobite
Artiopoda
 Agnostida - Diplagnostidae
Pseudagnostus (Pseudagnostus) aulax, Pseudagnostus (Pseudagnostus) tricanthus, Pseudagnostus (Pseudagnostus) parvus
 Agnostida - Agnostidae
Connagnostus aversus, Neoagnostus felix
Connagnostus aversus Shergold 1980
Neoagnostus felix Shergold 1980