Horse Creek K226 (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"
• "lntraclastic limestone - silty mudstone, fine recrystallised limestone, and skeletal clasts in clear pelletal silty grainstone matrix."

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 228202: 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
Brachiopoda
  -
Brachiopoda indet.
Brachiopoda indet. Cuvier 1805
Trilobita
 Asaphida - Ceratopygidae
Cermatops sp., Cermatops vieta
Cermatops sp. Shergold 1980 trilobite
Cermatops vieta Shergold 1980 trilobite
  - Changshaniidae
Wentsuia iota
Wentsuia iota Shergold 1980 trilobite
 Olenida - Idahoiidae
Maladioidella doylei
Maladioidella doylei Shergold 1980 trilobite
 Olenida - Aphelaspidae
Taenicephalites plerus n. sp.
Taenicephalites plerus n. sp. Shergold 1980 trilobite
Artiopoda
 Agnostida - Agnostidae
Connagnostus sp.
Connagnostus sp. Opik 1967
 Agnostida - Diplagnostidae
Rhaptagnostus apsis
Rhaptagnostus apsis Shergold 1980