74B20 (Ordovician of Belgium)

Where: Belgium (50.4° N, 4.6° E: paleocoordinates 48.3° S, 10.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Conochitina rugata other zone, Bois de Presles Member (Fosses Formation), Rawtheyan (455.8 - 445.6 Ma)

• Lower beds of Upper Member. 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 185316: 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
 Phacopida - Pterygometopidae
 Orthotetida - Triplesiidae
Triplesia ? hintsae1 Cocks 2014
 Billingsellida - Clitambonitidae
Vellamo sp.2 Opik 1930
 Strophomenida - Sowerbyellidae
 Strophomenida - Christianiidae
Christiania magna2 Sheehan 1987
 Strophomenida - Strophomenidae
Strophomena sp.2 Rafinesque and De Blainville 1824
"Costistrophomena costata" = Katastrophomena (Costistrophomena) costata2 Sheehan 1987
 Protorthida - Skenidiidae
Skenidioides cf. craigensis2 Reed 1917
given as Skenidioides sp., but described as close to S. craigensis
 Atrypida - Cyclospiridae
? Cyclospira sp.2 Hall and Clarke 1893
 Orthida - Dalmanellidae
"Dalmanella sambrensis" = Onniella jonesi2
"Dalmanella sambrensis" = Onniella jonesi2 Davidson 1883
 Orthida - Glyptorthidae
 Orthida - Orthidae
Boreadorthis sheehani n. sp.1 Cocks 2014
 Orthida - Orthidiellidae
 Orthida - Platystrophiidae