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Plesiosauria - Wikipedia, the free encyclopedia
The Plesiosauria or plesiosaurs are an order or clade of Mesozoic marine reptiles (marine Sauropsida), belonging to the Sauropterygia. Plesiosaurs first appeared in the latest Triassic Period, possibly in the Rhaetian stage, about 205 million years ago.
https://en.wikipedia.org/wiki/Plesiosauria
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Plesiosaur - New World Encyclopedia
Plesiosaurs were carnivorous, aquatic (mostly marine) reptiles that lived from the Triassic to the Cretaceous periods. They were the largest aquatic animals of their time.
http://www.newworldencyclopedia.org/entry/Plesiosaur
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Plesiosaurus - DinosaurFacts
Information on the plesiosaurus including pictures, facts, and a short biography.
http://www.dinosaurfacts.org/plesiosaurus
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Plesiosaurs and Pliosaurs - The "Sea Serpents" - About
During the Jurassic and Cretaceous periods, the earth's oceans, lakes and rivers were filled by large, agile reptiles, the plesiosaurs and pliosaurs, that looked uncannily like sea serpents.
http://dinosaurs.about.com/od/typesofdinosaurs/a/plesiosaurs.htm
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BBC Nature - Plesiosaurs Videos, News and Facts
Plesiosaurs were long-necked marine reptiles, closely related to the Pliosaurs though probably slower in the water.
http://www.bbc.co.uk/nature/life/Plesiosaur
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Plesiosaurs, the Beautiful Bottom-Feeders - Wired
In 1821, British geologists Henry De la Beche and William Conybeare presented a bizarre, previously-unknown fossil creature to their colleagues in the Geological Society of London.
http://www.wired.com/2011/06/plesiosaurs-the-beautiful-bottom-feeders
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Plesiosaur - Fossil Marine Reptile - Britannica
Plesiosaur, any of a group of long-necked marine reptiles found as fossils from the Late Triassic Period into the Late Cretaceous Period (215 million to 80 million years ago).
http://www.britannica.com/animal/plesiosaur
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'Sea Monster' Fetus Found-Proof Plesiosaurs Had Live Young?
Like most mammals, giant, dinosaur-era marine reptiles gave birth to live young, a new fossil study hints. But did the monsters mother?
http://news.nationalgeographic.com/news/2011/08/110811-plesiosaurs-live-birth-fossils-young-science-chiappe-dinosaurs-fetus/
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Pregnant Fossil Suggests Ancient Reptiles Birthed Live Young
A newly discovered plesiosaur fossil suggests the ancient reptile gave birth to live young, and possibly cared for their offspring after birth, similar to the way modern whales and dolphins do, based on the size of the fetus in the fossil.
http://www.livescience.com/15517-pregnant-plesiosaur-big-live-young.html
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Plesiosaur Peril - The Lifestyles and Behaviours of Ancient Marine Reptiles
Between the later part of the Triassic and the very end of the Cretaceous, the seas of the world (and some of its rivers, lakes and estuaries as well) were inhabited by the remarkable group of swimming reptiles known as the plesiosaurs.
http://blogs.scientificamerican.com/tetrapod-zoology/plesiosaur-peril-the-lifestyles-and-behaviours-of-ancient-marine-reptiles/
