Marine reptile
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Marine reptiles are reptiles which have become secondarily adapted for an aquatic or semiaquatic life in a marine environment. Only about 100 of the 12,000 extant reptile species and subspecies are cl
Extant Cenozoic marine reptiles: • Saltwater crocodile (top left) • Sea turtle (top right) • Marine iguana (bottom left) • Sea snake (bottom right)
Hawksbill sea turtle (Eretmochelys imbricata)
Fossil of Ophthalmosaurus icenius, a species of ichthyosaur
Aerial view of Slapton Sands and northern part of Ley geograph.org.uk 1434412
Ichthyosauria
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Ichthyosauria is an order of large extinct marine reptiles sometimes referred to as "ichthyosaurs", although the term is also used for wider clades in which the order resides.
Marine reptile
…period of the Paleozoic era. During the Mesozoic era, many groups of reptiles became adapted to life in the seas, including such familiar clades as the ichthyosaurs, plesiosaurs (these two orders were once thought united in the group "Enaliosauria", a classification now cladistically obsolete), mosasaurs, nothosaurs…
Ichthyosaurus communis in London
An ichthyosaur and plesiosaur by Édouard Riou, 1863. This old representation of a plesiosaur lifting its head is not accurate and physically impossible.
The skull of specimen NHMUK PV R1158 found by Joseph Anning in 1811
The torso of specimen NHMUK PV R1158 found by Mary Anning in 1812