Name: Edgarosaurus ‭(‬Edgar lizard‭)

.Phonetic: Ed-gar-o-sore-us.

Named By: Druckenmiller‭ ‬-‭ ‬2002.

Classification: Chordata,‭ ‬Reptilia,‭ ‬Sauropterygia,‭ ‬Plesiosauria,‭ ‬Plesiosauroidea,‭ ‬Polycotylidae.

Species: E.‭ ‬muddi‭ (‬type‭)‬.Diet: Piscivore/Carnivore.Size:

Estimated around‭ ‬3.5‭ ‬meters long

.Known locations: USA‭ ‬-‭ ‬Montana‭ ‬-‭ ‬Thermopolis Shale.

Time period: Albian of the Cretaceous

.Fossil representation: Remains of a single individual including the skull,‭ ‬vertebrae and most of a front leg.  

Edgarosaurus seems to have been one of the first polycoylid plesiosaurs to swim in the late Cretaceous Western Interior Seaway,‭ ‬a shallow sea that submerged much of central North American during the Cretaceous.‭ ‬Like its relatives,‭ ‬Edgarosaurus had a typical plesiosaur body but a short neck an elongated jaws,‭ ‬features reminiscent of the pliosaurs.‭ ‬As such Edgarosaurus probably relied upon to speed and manoeuvrability to actively chase down fish where the long jaws would compensate for the lack of a long neck.