Monte San Giorgio nothosaurs (Triassic to of Switzerland)

Where: Switzerland (45.2° N, 9.2° E: paleocoordinates 6.8° N, 20.7° E)

• coordinate based on nearby landmark

• basin-level geographic resolution

When: Monte San Giorgio bituminous shales Formation, Anisian to Anisian (247.2 - 237.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; carbonaceous shale

• "the sediments are fully marine and suggest a coast several kilometers away"
• bituminous shales (complete lithology described in Rieber & Sorbini)

Size class: macrofossils

Primary reference: P. M. Sander. 1988. A fossil reptile embryo from the Middle Triassic of the Alps. Science 329:780-782 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13344: authorized by Matthew Carrano, entered by Matthew Carrano on 01.03.2002, edited by Jonathan Tennant and Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

• Sander lists two distinct species of Neusticosaurus without naming them, noting that they come from distinct stratigraphic levels but without providing any further information.
Show authors, comments, and common names
Reptilia
 Eosauropterygia - Pachypleurosauridae
Neusticosaurus sp.
Neusticosaurus sp. Seeley 1882 diapsid
 Ichthyosauria - Mixosauridae
"Mixosaurus sp." = Mixosaurus, "Sangiorgiosaurus sp." = Mixosaurus2, Contectopalatus sp.2
"Mixosaurus sp." = Mixosaurus Baur 1887 ichthyosaur
"Sangiorgiosaurus sp." = Mixosaurus2 Baur 1887 ichthyosaur
Precise locality unknown
Contectopalatus sp.2 Maisch and Matzke 1998 ichthyosaur
Precise locality unknown
 Ichthyosauria - Besanosauridae
Besanosaurus leptorhynchus n. gen. n. sp.2
Besanosaurus leptorhynchus n. gen. n. sp.2 Dal Sasso and Pinna 1996 ichthyosaur
Precise locality unknown
 Ichthyosauria - Guanlingsauridae
Mikadocephalus sp. n. gen.2
Mikadocephalus sp. n. gen.2 Maisch and Matzke 1997 ichthyosaur
Precise locality unknown
 Ichthyosauria - Wimaniidae
Wimanius odontopalatus n. gen. n. sp.1
Wimanius odontopalatus n. gen. n. sp.1 Maisch and Matzke 1998 ichthyosaur
Precise locality unknown
1Motani 1999; 2Sander 2000