Plesiosauria

A new plesiosaur, Leurospondylus, from the Edmonton Cretaceous of Alberta

Skeletal cross-sections and ecological estimates for four cryptoclidid plesiosaurs: Tatenectes, Cryptoclidus, Muraenosaurus, and Abyssosaurus.

Arminisaurus schuberti (NAMU ES/jl 36052), a plesiosaurian from the Pliensbachian of Bielefeld (Germany). Right scapula in medial view.

Arminisaurus schuberti (NAMU ES/jl 36052), a plesiosaurian from the Pliensbachian of Bielefeld (Germany). Rear part of right lower jaw ramus in side view.

Muraenosaurus? Reedii, Sp. Nov. and Tricleidus? Laramiensis Knight, American Jurassic Plesiosaurs

Paddle of the British Jurassic pliosaurid plesiosaur Eardasaurus housed at the Oxford University Natural History Museum.

Illustration of an Elasmosaurus platyurus devouring a juvenile Tylosaurus while a Hesperornis swims by in the background, based on recent research on Elasmosaurid paleobiology which shows that they were far more raptorial than previously thought: https://sobekswimmingpool.wordpress.com/2021/05/30/what-sea-dragons-ate-plesiosaur-diets-revised/

Elasmosaurus platyurus, plesiosaurian from Late Cretaceous (Campanian) of North America

Elasmosaurus platyurus, plesiosaurian from Late Cretaceous (Campanian) of North America

Geographic and geologic map showing the location and involved strata of the studied fossil sites in the Xinhe Formation. (A, B) location of the fossiliferous localities in the Gansu Province. (C) Geological map of the involved strata of the studied fossil site (from State Bureau of Surveying and Mapping, GS (2016)2884). White star=Jinchuanloong niedu. Black star=plesiosaur fossils. (D) Stratigraphic chart of the Jurassic at the localities.

Basal cryptoclidid plesiosaur restoration.

Basal cryptoclidid plesiosaur restoration.

Leptocleidus capensis, a plesiosaur from the Early Cretaceous of South Africa, pencil drawing, digital coloring

Paleo Hall at HMNS

Paleo Hall at HMNS

Paleo Hall at HMNS