Horse Creek K222 (Cambrian of Australia)

Where: Queensland, Australia (22.0° S, 140.3° E: paleocoordinates 25.0° N, 174.8° 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, peloidal, shelly/skeletal, silty grainstone

• "rocks were deposited in high energy shallow subtidal, intertidal and possibly aeolian environments"
• "Intraclastic limestone - clast skeletal peloidal grainstone - with elongated current-aligned silty mudstone, silty pelletal grainstone and skeletal clasts; shell material comminuted."

Size class: macrofossils

Preservation: mold/impression

Collected by Shergold in 1969

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 228198: authorized by Melanie Hopkins, entered by Melanie Hopkins on 22.11.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Pelmatozoa indet.
Pelmatozoa indet. Leuckart 1848
Artiopoda
 Agnostida - Diplagnostidae
Pseudagnostus parvus
Pseudagnostus parvus Shergold 1980
 Agnostida - Agnostidae
Connagnostus aversus, Neoagnostus felix
Connagnostus aversus Shergold 1980
Neoagnostus felix Shergold 1980
Trilobita
  - Changshaniidae
Wentsuia iota
Wentsuia iota Shergold 1980 trilobite
 Corynexochida - Kaolishaniidae
Peichiashania prima
Peichiashania prima Shergold 1980 trilobite
 Corynexochida - Leiostegiidae
Lotosoides bathyora
Lotosoides bathyora Shergold 1980 trilobite
 Olenida - Aphelaspidae
Taenicephalites plerus
Taenicephalites plerus Shergold 1980 trilobite
 Olenida - Idahoiidae
Maladioidella doylei
Maladioidella doylei Shergold 1980 trilobite
 Olenida - Dokimokephalidae
Lorrettina depressa
Lorrettina depressa Shergold 1980 trilobite