74B21 (Ordovician of Belgium)

Where: Belgium (50.3° N, 5.1° E: paleocoordinates 48.3° S, 9.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Spinachitina fossensis other zone, Faulx-les-Tombes Member (Fosses Formation), Rawtheyan (455.8 - 445.6 Ma)

• Top Beds. Given as middle beds of Upper Half. NOTE: Spinachitina fossensis is not found here, but there beds are between the Conochitina rugata and Bursachitina umbilicata zones. Faulx-les-Tombes member overlies Bois de Presles member of Fosses. Fosses overlies Vitrival-Bruyère Formation.

• group of beds-level stratigraphic resolution

Environment/lithology: deep-water; lithified, green, sandy shale

• Described as deepwater
• Green and dark-green slightly sandy shale with Tetraspis seticornis and Christiana tenuicincta

Size class: macrofossils

Preservation: cast

Collected by P. J. Lespérance in 1974

Primary reference: P. J. Lespérance and P. M. Sheehan. 1987. Trilobites et Brachiopodes ashgilliens (Ordovicien supérieur) de l'"Assise" de Fosse, Bande de Sambre-Meuse (Belgique). Bulletin-Institut royal des sciences naturelles de Belgique. Sciences de la terre 57:91-123 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185319: authorized by Pete Wagner, entered by Pete Wagner on 18.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

• Specimens at Institut royal des sciences naturelles de Belgique
 Corynexochida - Styginidae
Phillipsinella sp. Novak 1885 trilobite
 Corynexochida - Illaenidae
Stenopareia sp. Holm 1886 trilobite
 Odontopleurida - Odontopleuridae
Primaspis sp. Richter and Richter 1917 trilobite
 Agnostida - Metagnostidae
Arthrorhachis cf. tarda Barrande 1846 trilobite
 Phacopida - Encrinuridae
Cybeloides sp. Slocum 1913 trilobite
 Asaphida - Trinucleidae
Tretaspis hadelandica Stormer 1945 trilobite
 Orthotetida - Triplesiidae
Triplesia ? hintsae1 Cocks 2014
 Strophomenida - Sowerbyellidae
 Strophomenida - Leptestiidae
 Strophomenida - Foliomenidae
Foliomena folium2 Barrande 1879