Tregarvan (Ordovician of France)

Also known as Upper Part, Tufs et calcaires de Rosan Fm., Crozon, Finistere, France

Where: Finistere, France (48.3° N, 4.2° W: paleocoordinates 70.3° S, 53.9° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Upper Member (Tufs et calcaires de Rosan Formation), Kosovian (445.6 - 443.7 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, argillaceous sandstone and lithified limestone

• Quartz arenite with minor intercalations of schist and limestone

Size class: macrofossils

Primary reference: M. Melou. 1990. Brachiopodes articules de la coupe de l'ile de Rosan (Crozon, Finistere); formation des tufs et calcaires de Rosan (Caradoc-Ashgill). GĂ©obios 23(5):539-579 [A. Miller/P. Novack-Gottshall/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 20870: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 11.06.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Primarily articulate brachiopod taxonomy and biostrat.
Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
 Orthida - Draboviidae
Hirnantia sp. Lamont 1935
Bivalvia
 Modiomorphida - Modiomorphidae
Modiolopsis sp. Hall 1847 clam