Point 902, Monte San Giorgio, Bed 58 (Triassic of Switzerland)

Where: Ticino, Switzerland (45.9° N, 8.9° E: paleocoordinates 7.0° N, 21.7° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Secedensis ammonoid zone, Grenzbitumenzone Member (Besano Formation), Illyrian (247.2 - 242.0 Ma)

• 15-16 cm thick

• bed-level stratigraphic resolution

Environment/lithology: marine; dolomite

• Finely-laminated dolomite.

Size class: macrofossils

Collection methods: surface (in situ),

Primary reference: H. Rieber. 1973. Die Triasfauna der Tessiner Kalkalpen: XXII. Cephalopoden aus der Grenzbitumenzone (Mittlere Trias) des Monte San Giorgio (Kanton Tessin, Schweiz). Schweizerische Palaeontologische Abhandlungen 93:1-96 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 44690: authorized by David Bottjer, entered by Matthew Clapham on 16.09.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Aulacoceratida - Xiphoteuthididae
 Pseudorthocerida - Trematoceratidae
"Michelinoceras campanile" = Trematoceras elegans
"Michelinoceras campanile" = Trematoceras elegans Muenster 1831
 Ceratitida - Ceratitidae
Serpianites curionii n. gen. n. sp., Ticinites polymorphus n. gen. n. sp., Ticinites ticinensis n. gen. n. sp.
Serpianites curionii n. gen. n. sp. Rieber 1973 ceratite
Ticinites polymorphus n. gen. n. sp. ceratite
Ticinites ticinensis n. gen. n. sp. Rieber 1973 ceratite
 Ceratitida - Longobarditidae
Longobardites cf. zsigmondyi Bockh 1874 ceratite
 Ceratitida - Ptychitidae
Flexoptychites acutus von Mojsisovics 1882 ceratite