GS 1231 - Aorere Group, Cobb Bed (Ordovician of New Zealand)

Where: New Zealand (41.1° S, 172.5° E: paleocoordinates 12.5° N, 169.4° W)

• outcrop-level geographic resolution

When: Leslie Formation (Aorere Group), Darriwilian (467.3 - 458.4 Ma)

• LITHOSTRATIGRAPHY: Upper Aorere Series=group of Henderson et al. (1959). AGE: Upper Darriwilian Cooper (1971) notes that this is now the Leslie Formation, which overlies the Roaring Lion formation (PJW).

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified shale and lithified sandstone

• ENVIRONMENT: Environmental data not reported in text.
• SPECIFIC LITHOLOGY: Interbeded slates, quartzites, and sandstones. LITHIFICATION: Assumed to be lithified as rocky types are slightly metamorphosed (e.g. slates).

Size class: macrofossils

Reposited in the IGNS

• COLLECTOR: L.I. Grange and S.J.H. Sylvester. Re-collected by S.K. Swarko and A. Wodzicki (1958). REPOSITORY: New Zealand Geological Survey (now GNS Science), Lower Hutt, New Zealand.

Primary reference: S. K. Skwarko. 1962. Graptolites of Cobb River-Mount Arthur Area, North-West Nelson, New Zealand. Transactions of the Royal Society of New Zealand 1(15):215-247 [A. Miller/A. Hendy/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 63957: authorized by Austin Hendy, entered by Austin Hendy on 28.08.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• COMPLETENESS: Exhaustive for graptolites, trilobites and hydroids. NOMENCLATURE: Probably somewhat outdated, but from an authoritative publication and identified by a specialist.
Show authors, comments, and common names
Pterobranchia
 Graptoloidea - Dichograptidae
Didymograptus nicholsoni, Didymograptus cf. euodus
Didymograptus nicholsoni Lapworth 1875 graptolite
Didymograptus cf. euodus Lapworth 1875 graptolite
 Graptoloidea - Pterograptidae
Pterograptus elegans
Pterograptus elegans Holm 1881 graptolite
 Graptoloidea - Abrograptidae
"Retiograptus "latus"" = Reteograptus, "Retiograptus speciosus" = Reteograptus, "Retiograptus geinitzianus" = Reteograptus geinitzianus
"Retiograptus "latus"" = Reteograptus graptolite
"Retiograptus speciosus" = Reteograptus graptolite
"Retiograptus geinitzianus" = Reteograptus geinitzianus Hall 1859 graptolite
 Graptoloidea - Lasiograptidae
Hallograptus aff. mucronatus
 Graptoloidea - Climacograptidae
Climacograptus sp., Climacograptus antiquus
Climacograptus sp. Hall 1865 climacograptid
Climacograptus antiquus climacograptid
 Graptoloidea - Diplograptidae
Diplograptidae indet., Amplexograptus confertus, "Glyptograptus teretiusculus" = Hustedograptus teretiusculus, Diplograptus spiculatus
"Glyptograptus teretiusculus" = Hustedograptus teretiusculus Hisinger 1840 graptolite
 Graptoloidea - Glossograptidae
"Cryptograptus schaferi" = Cryptograptus schaeferi, Glossograptus hincksii
"Cryptograptus schaferi" = Cryptograptus schaeferi Lapworth 1880 graptolite
Glossograptus hincksii Hopkinson 1872 graptolite