Ryan Quarry, south of Ada (Devonian of the United States)

Where: Oklahoma (34.7° N, 96.6° W: paleocoordinates 28.9° S, 45.3° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Woodford Shale Formation, Late/Upper Famennian (364.7 - 360.7 Ma)

• The ammonoids come from ca. 2 meters below to 0.5 m above sample level R19 of Over (1992, RSP section). Upper Wocklumeria Stufe, probably UD VI-C2 (upper Parawocklumeria Genozone).

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, nodular, phosphatic, pyritic shale

• Pyritic (marcasitic) dark grey shales with beds of phosphate nodules containing pyrite and rare carbonate concretions

Size class: macrofossils

Preservation: mold/impression, replaced with pyrite

Collected by R.H. Mapes, D.M. Work in 1986, 1990-1999, 2004; reposited in the MfN

Primary reference: R. T. Becker and R. H. Mapes. 2010. Uppermost Devonian ammonoids from Oklahoma and their palaeobiogeographic significance. Acta Geologica Polonica 60:139-163 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 187037: authorized by Matthew Clapham, entered by Matthew Clapham on 11.07.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Clymeniida - Cyrtoclymeniidae
Cyrtoclymenia cf. procera Czarnocki 1989 ammonite
 Clymeniida - Wocklumeriidae
Kielcensia vagabunda n. sp. Becker 2010 ammonite
 Clymeniida - Biloclymeniidae
Riphaeoclymenia polygona n. sp. Becker 2010 ammonite
Riphaeoclymenia pontotocensis n. sp. Becker 2010 ammonite
 Goniatitida - Sporadoceratidae
Spirosporadoceras overi n. gen. n. sp. Becker 2010 ammonite
Spirosporadoceras delicatum n. sp. Becker 2010 ammonite