Family Trigonodontidae Arambourg 1927
Sister taxa: none
Subtaxa: Trigonodon
Distribution:
• Miocene of Algeria (1 collection), the Czech Republic (1), France (3), Italy (1), Portugal (1), Slovakia (1), Spain (4)
• Eocene of Belgium (1), Saudi Arabia (1)
Total: 14 collections including 16 occurrences