Las Arroyacas Formation type area (Silurian to of Spain)

Where: Palencia, Spain (43.0° N, 0.9° W: paleocoordinates 65.2° S, 51.3° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Las Arroyacas-Bachtal Formation (Suertes Group), Wenlock to Wenlock (433.4 - 423.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; shale and fine-grained sandstone

• [490 m. thick alternation of shales and fine-grained sandstones...]

Primary reference: H. Jahnke, A. Henn, H. Mader and J. Schweineberg. 1983. Silur und Devon im Arauz-Gebiet (Prov. Palencia, N-Spanien). Newsletters on Stratigraphy 13(1):40-66 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 40345: authorized by Michael Foote, entered by Michael Foote on 22.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Graptolithina
 Graptoloida -
Cyrtograptus sp. graptoloid
 Bireclinata - Monograptidae
Strophomenata
 Productida - Strophochonetidae
Strophochonetes "sp. 5" Muir-Wood 1962
 Orthotetida - Chilidiopsidae
Morinorhynchus sp. Havlicek 1965
 Strophomenida - Leptostrophiidae
"Aphanomena sp." = Eostropheodonta
"Aphanomena sp." = Eostropheodonta Bancroft 1949
 Strophomenida - Rafinesquinidae
"Leptaena ex gr. depressa" = Leptaena (Leptaena) depressa
"Leptaena ex gr. depressa" = Leptaena (Leptaena) depressa Sowerby 1824
 Strophomenida - Eopholidostrophiidae
Rhynchonellata
 Athyridida - Meristidae
Merista sp. Suess 1851
 Spiriferida - Cyrtiidae
Striispirifer sp. Cooper and Muir-Wood 1951
 Rhynchonellida - Camarotoechiidae
 Orthida - Proschizophoriidae
 Orthida - Dalmanellidae