Coumiac Frasnian/Famennian boundary stratotype, Famennian part (Devonian of France)

Where: Alsace, France (43.4° N, 3.1° E: paleocoordinates 24.4° S, 15.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: middle Palmatolepis triangularis - upper Palmatolepis triangularis conodont zone, Coumiac Formation, Famennian (372.2 - 358.9 Ma)

• Frasnian part is in Middle Coumiac Formation, beds 23 through 31, zones "12" and "13". Famennian part is mainly in Upper Coumiac Formation, but also a bit of the Middle Coumiac Formation, and extending up into the Lower Griotte Formation, Triangularis Zone and extending up into the Crepida zone. PJW: Conodont zone basedd on Feist 2019.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; red lime mudstone

• "The sequence is one of pelagic calcilutites, mostly red tinted and well bedded..."

Size class: macrofossils

Primary reference: G. Klapper, R. Feist, R. T. Becker and M. R. House. 1993. Definition of the Frasnian/Famennian Stage boundary. Episodes 16(4):433-441 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 38676: authorized by Michael Foote, entered by Michael Foote on 28.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Conodonta
  -
Branmehla sp.
Branmehla sp. Haas 1959 conodont
 Ozarkodinida - Palmatolepidae
Palmatolepis triangularis, Palmatolepis aff. delicatula, Palmatolepis "delicatula", Palmatolepis clarki, Palmatolepis minuta, Palmatolepis tenuipunctata, Palmatolepis quadrantinodosolobata, Palmatolepis cf. regularis, Palmatolepis ? crepida
Palmatolepis "delicatula" Müller 1956 conodont
 Ozarkodinida - Polygnathidae
Polygnathus brevilaminus, Polygnathus sp. n. sp., Polygnathus glaber, Ancyrognathus sp. n. sp., Ancyrognathus sinelaminus
Polygnathus sp. n. sp. Hinde 1879 conodont
Ancyrognathus sp. n. sp. conodont
 Prioniodontida - Icriodontidae
Pelekysgnathus planus
Cephalopoda
 Bactritida - Bactritidae
Lobobactrites sp., Lobobactrites termierorus, Lobobactrites guerichi, ? Bactrites anellus
Lobobactrites sp. Schindewolf 1932
 Goniatitida - Tornoceratidae
Tornoceras cf. typum, ? Falcitornoceras falciculum, Phoenixites cf. sulcatus, Phoenixites frechi
Tornoceras cf. typum Sandberger and Sandberger 1851 ammonite
Phoenixites cf. sulcatus Becker 1993 ammonite
Phoenixites frechi Wedekind 1918 ammonite
 Goniatitida - Cheiloceratidae
? Cheiloceras sp.
? Cheiloceras sp. Frech 1897 ammonite
Trilobita
 Phacopida - Phacopidae
Nephranops dillanus
Nephranops dillanus Richter and Richter 1926 trilobite