Chondrichthyes - Squaliformes - Dalatiidae
Synonym: Leius Kner 1865
Parent taxon: Dalatiidae according to N. Straube et al. 2015
See also Carillo-Briceño et al. 2014, Casier 1946, Casier 1958, Cassier 1966, Compagno 1984, de Figueiredo Petean and R. de Carvalho 2018, Jordan 1963, Kocsis 2007, Laurito 1996, Maisch IV et al. 2025, Popov et al. 2025, Purdy et al. 2001, Sepkoski 2002, Villafaña et al. 2020 and Yabe and Hirayama 1998
Sister taxa: Acrosqualiolus, Angoumeius, Dalatias, Eosqualiolus, Euprotomicroides, Euprotomicrus, Hessinodon, Oligodalatias, Squaliodalatias, Squaliolus, Squaliomicrus
Subtaxa: Isistius triangulus Isistius trituratus
Ecology: nektonic carnivore
Distribution:
• Pliocene of Ecuador (2 collections), United States (1: North Carolina)
• Miocene to Pliocene of Costa Rica (1), Ecuador (1), Japan (1), United States (1: Florida)
• Miocene of Costa Rica (1), France (6), Germany (2), Hungary (1), Panama (3), Portugal (1), Slovakia (1), Spain (1)
• Eocene of Barbados (1), Belgium (2), France (3), the Netherlands (25), the Russian Federation (2), Ukraine (3), the United Kingdom (8), United States (1: Virginia), Uzbekistan (1)
• Paleocene of United States (1: California)
Total: 70 collections including 71 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.