Glyptagnostus reticulatus zone, Ishpa River, Altai - Romanenko 1984 (Cambrian of Russian Federation)

Where: Altai (Region), Russian Federation (52.0° N, 86.0° E: paleocoordinates 2.6° S, 19.9° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Glyptagnostus reticulatus trilobite zone, Kul'bich Formation, Sakian (497.0 - 492.8 Ma)

• Unfortunately, the localities are not designated as either terrigenous or calcareous terrigenous ""types"". Only vague lithologies can be inferred and ""types"" inferred through the biozone descriptions. If the lithology is the terrigenous type, the formation is Tandoshinskaya, if the lithology is calcareous-terrigenous type, the formation is either Yelandin or Bol'sheishin. PJW: reticulatus zone here now is the Kul'bich formation.

• formation-level stratigraphic resolution

Environment/lithology: lithified limestone

• limestone

Size class: macrofossils

Collection methods: Does not include all of the polymeroid trilobites.

Primary reference: Y.e. U. Romanenko. 1984. Trilobites from the Middle-Upper Cambrian boundary beds of Altai. Paleontologicial Journal 19(4):64-74 [M. Patzkowsky/P. Borkow]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 10061: authorized by Mark Patzkowsky, entered by Phil Borkow on 13.02.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• List does not include brachiopods or hyoliths which may occur rarely in the sections.
Show authors, comments, and common names
Trilobita
 Ptychopariida - Norwoodiidae
Hardyoides sp.
Hardyoides sp. Kobayashi 1938 trilobite
 Olenida - Pterocephaliidae
Prehousia sp., Uxunella gloriosa, Uxunella plana
Prehousia sp. Palmer 1960 trilobite
Uxunella plana trilobite
 Olenida - Eulomidae
Altaiaspis sp.
Altaiaspis sp. Ivshin 1960 trilobite
 Olenida - Aphelaspidae
Olentella sp., Nganasanella sp., Aphelaspis sp., Maduiya formosa n. sp.
Olentella sp. Ivshin 1953 trilobite
Nganasanella sp. Rozova 1963 trilobite
Aphelaspis sp. Resser 1935 trilobite
Maduiya formosa n. sp. trilobite
Artiopoda
 Agnostida -
Glaberagnostus altaicus n. sp.
Glaberagnostus altaicus n. sp. Romanenko 1985
4 complete skeletons and 20 cephala/pygidia