Eternauta patagonica

Eternauta patagonica
Temporal range: Late Jurassic,
Skull of Eternauta patagonica (photograph and diagram in right view)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Ichthyosauria
Family: Ophthalmosauridae
Subfamily: Platypterygiinae
Genus: Eternauta
Campos et al., 2025
Species:
E. patagonica
Binomial name
Eternauta patagonica
Campos et al., 2025

Eternauta patagonica is an extinct species of ophthalmosaurid ichthyosaurian known from the Late Jurassic (Tithonian age) Vaca Muerta Formation of Argentina. E. patagonica is the only species in the genus Eternauta, known from a nearly complete skull with an associated rib and front flipper. The anatomy of the mandible and scleral ring indicate Eternauta had a different feeding strategy compared to other ichthyosaurs it coexisted with.