Achtelmatt, near Anwil (iron-oolithic bed 24) (Jurassic of Switzerland)

Where: Switzerland (47.5° N, 7.5° E: paleocoordinates 37.7° N, 17.0° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Clydoniceras discus ammonoid zone, Schelmenloch Member (Ifenthal Formation), Late/Upper Bathonian (167.7 - 164.7 Ma)

• Hochstetteri Horizon, Discus Subzone

• bed-level stratigraphic resolution

Environment/lithology: lithified, ferruginous, ooidal limestone

Size class: macrofossils

Collection methods: Repository: Museum of Natural History Bern (NMBE)

Primary reference: V. Dietze and B. Hostettler. 2016. Occurrences of the ammonite genus Clydoniceras Blake, 1905 in the Middle Jurassic (Upper Bathonian, Discus Zone) of NW Switzerland. Proceedings of the Geologists' Association 127:218-229 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 193321: authorized by Matthew Clapham, entered by Matthew Clapham on 11.05.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Multituberculata - Paulchoffatiidae
"Parachoffatia sp." = Plesiochoffatia
"Parachoffatia sp." = Plesiochoffatia Hahn and Hahn 1999 multituberculate
Cephalopoda
 Ammonitida - Oppeliidae
Oxycerites orbis Giebel 1852 ammonite
 Ammonitida - Perisphinctidae
Homoeoplanulites balinensis Neumayr 1871 ammonite
Homoeoplanulites homoeomorphus Buckman 1922 ammonite
 Ammonitida - Macrocephalitidae
Macrocephalites sp. Zittel 1884 ammonite
Macrocephalites jacquoti Douvillé 1878 ammonite
 Ammonitida - Stephanoceratidae
Clydoniceras discus Sowerby 1813 ammonite
Bivalvia
 Pectinida - Limidae
Ctenostreon sp. Eichwald 1862 file clam
 Ostreida - Palaeolophidae
Actinostreon sp. Bayle 1878 oyster
 Trigoniida - Trigoniidae
Trigonia sp. Bruguière 1789 clam