Horse Creek K215 (Cambrian of Australia)

Where: Queensland, Australia (21.9° 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, pyritic, peloidal, shelly/skeletal, silty grainstone

• "rocks were deposited in high energy shallow subtidal, intertidal and possibly aeolian environments"
• "Sample from 3 m above base of outcrop; silty pelletal peloidal skeletal grainstone; disseminated pyrite."

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 228191: 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
Artiopoda
 Agnostida - Diplagnostidae
Pseudagnostus sp., Rhaptagnostus apsis, Pseudagnostus (Pseudagnostus) mortensis, Pseudagnostus (Pseudagnostus) aulax, Pseudagnostus (Pseudagnostus) tricanthus
Pseudagnostus sp. Jaekel 1909
Rhaptagnostus apsis Shergold 1980
 Agnostida - Agnostidae
Neoagnostus greeni n. sp., Innitagnostus medius, Acmarhachis hybrida
Neoagnostus greeni n. sp. Shergold 1980
Innitagnostus medius Shergold 1980
Acmarhachis hybrida Shergold 1980
Trilobita
 Asaphida - Asaphidae
Atopasaphus sp.
Atopasaphus sp. Shergold 1971 trilobite
 Asaphida - Ceratopygidae
Cermatops sp., Haniwoides varia
Cermatops sp. Shergold 1980 trilobite
Haniwoides varia Shergold 1980 trilobite
  - Changshaniidae
Wentsuia iota n. sp.
Wentsuia iota n. sp. Shergold 1980 trilobite
 Olenida - Idahoiidae
Maladioidella doylei
Maladioidella doylei Shergold 1980 trilobite
 Olenida - Aphelaspidae
Taenicephalites plerus
Taenicephalites plerus Shergold 1980 trilobite
 Corynexochida - Kaolishaniidae
Peichiashania prima
Peichiashania prima Shergold 1980 trilobite
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
Brachiopoda
  -
Brachiopoda indet.
Brachiopoda indet. Cuvier 1805