†superfamily Thalattosauroidea Nopcsa 1928 (diapsid)
Parent taxon: Thalattosauria according to X. -C. Wu et al. 2009
See also Druckenmiller et al. 2020 and Nicholls 1999
Sister taxon: Askeptosauroidea
Subtaxa: Agkistrognathus Clarazia Gunakadeit Hescheleria Nectosaurus Paralonectes Thalattosauridae Thalattosaurus Xinpusaurus
Ecology:
Distribution:
• Triassic of Austria (1 collection), Canada (3: British Columbia), China (7), Switzerland (2), United States (8: Alaska, California, Oregon)
Total: 21 collections including 30 occurrences