Rio Ceira Grp, Ribeira do Bracal Fm., Bucaco Syncline, Portugal (Ordovician of Portugal)

Where: Portugal (40.0° N, 8.0° W: paleocoordinates 75.6° S, 52.1° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Ribeira do Bracal Formation (Rio Ceira Group), Kosovian (445.6 - 443.7 Ma)

• formation-level stratigraphic resolution

Environment/lithology: shoreface; lithified mudstone and lithified siltstone

• Alternating mudstones and siltstones with sharp-based siltstone and hummocky, cross-stratified sandstone

Size class: macrofossils

Primary reference: T. P. Young. 1985. The stratigraphy of the Upper Ordovician of central Portugal. University of Sheffield, Sheffield, England [A. Miller/P. Novack-Gottshall/P. Novack-Gottshall]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 20934: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 12.06.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
 Orthida - Harknessellidae
Horderleyella sp. Bancroft 1928