Jurassique

Jurassic Forest, Cathedral of Ferns - Blue Mountains, New South Wales.

A life reconstruction of the middle Jurassic sauropod, Spinophorosaurus nigerensis, from the nigerian Irhazer Shale.

Osgodby Formation (Middle Jurassic) exposed on the shore of Cayton Bay, North Yorkshire.

Matmor Formation (Jurassic, Callovian) exposed in Makhtesh Gadol, Israel. (Electricity pylon for scale).

A lampshell of the genus Acanthothiris, Class Rhynchonellata, Order Rhynchonellida, Family Acanthothirididae, 20mm along the axis, view of the pedunculate valve, from Woodeaton, Oxfordshire, UK, middle Middle Jurassic (Bathonian)

A lampshell of the genus Acanthothiris, Class Rhynchonellata, Order Rhynchonellida, Family Acanthothirididae, 20mm along the axis, view of the opening, from Woodeaton, Oxfordshire, UK, middle Middle Jurassic (Bathonian)

A lampshell of the genus Acanthothiris, Class Rhynchonellata, Order Rhynchonellida, Family Acanthothirididae, 20mm along the axis, lateral view, from Woodeaton, Oxfordshire, UK, middle Middle Jurassic (Bathonian)

A lampshell of the genus Acanthothiris, Class Rhynchonellata, Order Rhynchonellida, Family Acanthothirididae, 20mm along the axis, view of the hinge, from Woodeaton, Oxfordshire, UK, middle Middle Jurassic (Bathonian)

A lampshell of the genus Acanthothiris, Class Rhynchonellata, Order Rhynchonellida, Family Acanthothirididae, 20mm along the axis, view of the brachial valve, from Woodeaton, Oxfordshire, UK, middle Middle Jurassic (Bathonian)

An atypical (without intertidal and supratidal environment) carbonate platform settles down along the margin. Shallow water oolithes and oncoids are deposited in a narrow zone between a basin with Cancellophycus to the north and a marine/swampy plain with abundants mollusc fauna. However the Mytilus formation, rich in bathonian and callovian foraminifera (Septfontaine, 1984 etc.), develop thick limestone beds tenth of meter above, wrongly attributed to the upper Jurassic. See discussion in Septfontaine (1984).

Coelurus fragilis, a coelurosaur from the Late Jurassic of North America, pencil drawing, digital coloring

Coelurus fragilis, a coelurosaur from the Late Jurassic of North America, pencil drawing, digital coloring

Life restoration of the German Jurassic ichthyosaur Suevoleviathan disinteger. The dorsal and caudal fins are loosely based on those of Stenopterygius. References Maisch, M.W. (2020). "The best-preserved skeleton of Suevoleviathan integer (Bronn, 1844)(Reptilia: Ichthyosauria) from the lower Jurassic of south-western Germany, with a discussion of the genus". Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 297 (2): 153–172. Maisch, M.W. (1998). "A new ichthyosaur genus from the Posidonia Shale (Lower Toarcian, Jurassic) of Holzmaden, SW-Germany with comments on the phylogeny of post-Triassic ichthyosaurs". Neues Jahrbuch für Geologie und Paläontologie-Abhandlungen 209 (1): 47–78.

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

Fossil samples – e.g. ‘primitive’ bony fish (1, 2), a skull of a temnospondyl ‘amphibian’ (probably a metoposauroid) in dorsal view (3), a skull of an archosaur of the crocodile lineage (probably a phytosaur) in palatal view (4), holotype of the “gliding reptile” Icarosaurus siefkeri [1] (5) and Atreipus-Grallator-type dinosaur tracks (bottom right) – from the Newark Supergroup, i.e. a series of mainly Late Triassic to Early Jurassic sedimentary rocks of eastern North America ↑ Edwin H. Colbert: A gliding reptile from the Triassic of New Jersey. American Museum Novitates, 2230. American Museum of Natural History, New York 1966, digitallibrary.amnh.org, cf. fig. 3 therein.

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