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.
Reptilia
 Ichthyosauria - Wimaniidae
Wimanius odontopalatus n. gen. n. sp.1
Wimanius odontopalatus n. gen. n. sp.1 Maisch and Matzke 1998 ichthyosaur
Precise locality unknown
 Ichthyosauria - Mixosauridae
Contectopalatus sp.2, "Mixosaurus sp." = Mixosaurus, "Sangiorgiosaurus sp." = Mixosaurus2
Contectopalatus sp.2 Maisch and Matzke 1998 ichthyosaur
Precise locality unknown
"Mixosaurus sp." = Mixosaurus Baur 1887 ichthyosaur
"Sangiorgiosaurus sp." = Mixosaurus2 Baur 1887 ichthyosaur
Precise locality unknown
 Ichthyosauria - Guanlingsauridae
Mikadocephalus sp. n. gen.2 Maisch and Matzke 1997 ichthyosaur
Precise locality unknown
 Ichthyosauria - Besanosauridae
Besanosaurus leptorhynchus n. gen. n. sp.2 Dal Sasso and Pinna 1996 ichthyosaur
Precise locality unknown
Neusticosaurus
  -
Neusticosaurus sp. Seeley 1882