Excalibosaurus

Excalibosaurus Temporal range: Early Jurassic, 196.5–190.8 Ma[1] PreꞒ Ꞓ O S D C P T J K Pg N
Fossil, Royal Ontario Museum
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Sauropsida
Order:	†Ichthyosauria
Family:	†Leptonectidae
Genus:	†Excalibosaurus McGowan, 1986
Binomial name
Excalibosaurus costini McGowan, 1986

Excalibosaurus (meaning "Excalibur's lizard") is a monotypic genus of marine prehistoric reptiles (ichthyosaurs) that lived during the Sinemurian stage (approximately 196.5 ± 2 Ma to 190.8 ± 1.0 Ma (million years ago)) of the Early Jurassic period in what is now England. It is characterized by the extreme elongation of the rostrum, with the lower jaw about three-quarters the length of the upper jaw, giving the animal a swordfish-like look. The only known species is Excalibosaurus costini.