Lynna River section L25A (Ordovician of Russian Federation)

Where: Russian Federation (60.0° N, 32.6° E: paleocoordinates 37.7° S, 1.2° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Megistaspis limbata trilobite zone, Frizy Member (Volkhov Formation), Volkhov (471.1 - 469.2 Ma)

• Meterage is negative because 0 meterage in section is at boundary between Jeltiaki member and overlying Frizy member which rests above this sample.

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified limestone

• Limestone beds are tempestites

Size class: mesofossils

Primary reference: T. Hansen and A. T. Nielsen. 2003. Upper Arenig trilobite biostratigraphy and sea-level changes at Lynna River near Volkhov, Russia. Bulletin of the Geological Society of Denmark 50:105-114 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 157112: authorized by Melanie Hopkins, entered by Melanie Hopkins on 06.06.2014, edited by Björn Kröger

Creative Commons license: CC BY (attribution)

Taxonomic list

 Craniida - Craniidae
 Pentamerida - Porambonitidae
 Orthida - Ranorthidae
Ranorthis spp.2 Öpik 1939
 Orthida - Orthidae
 Orthida - Paurorthidae
Paurorthis spp.2 Schuchert and Cooper 1931
 Billingsellida - Polytoechiidae
 Billingsellida - Clitambonitidae
Apomatella ingrica2 Pahlen 1877
 Strophomenida - Plectambonitidae
"Ingria nefedyevi" = Ingria nefedjevi2
"Ingria nefedyevi" = Ingria nefedjevi2 Eichwald 1855
 Lingulida -
Linguloidea indet.2 Menke 1828
 Phacopida - Pterygometopidae
Pterygometopus sclerops Dalman 1827 trilobite
 Phacopida - Encrinuridae
Cybele bellatula Dalman 1827 trilobite
 Phacopida - Cheiruridae
Hemisphaerocoryphe sp. Reed 1896 trilobite
Hemisphaerocoryphe platinflata1 Hansen 2005 trilobite
Nieszkowskia tumida Angelin 1854 trilobite
subspecies gibba
Cyrtometopus clavifrons Dalman 1827 trilobite
 Corynexochida - Panderiidae
Pogrebovites sp. Balashova 1976 trilobite
 Corynexochida - Illaenidae
 Harpetida - Harpetidae
"Harpes spasskii" = Scotoharpes spasskii
"Harpes spasskii" = Scotoharpes spasskii Eichwald 1840 trilobite
 Trinucleida - Raphiophoridae
Lonchodomas volborthi Schmidt 1894 trilobite
 Asaphida - Remopleurididae
Remopleurides sp. Portlock 1843 trilobite
 Asaphida - Asaphidae
"Asaphus lepidurus" = Asaphus (Asaphus) lepidurus
"Asaphus lepidurus" = Asaphus (Asaphus) lepidurus Nieszkowski 1859 trilobite
subgenus Asaphus
 Asaphida - Nileidae
Nileus sp. Dalman 1827 trilobite