noun
ichthyosaur
Extinct marine reptile from the Mesozoic era; used in paleontology and general contexts.
魚竜は恐竜ではなく、海生爬虫類の一種です。
Ichthyosaurs are not dinosaurs; they are a type of marine reptile.
博物館で魚竜の化石を見ました。
I saw an ichthyosaur fossil at the museum.
From 魚 (fish) + 竜 (dragon), a calque of the scientific name Ichthyosauria (Greek ichthys 'fish' + sauros 'lizard').