The Plesiosauria[ a ][ 4 ] or plesiosaurs are an order or clade of extinct Mesozoic marine reptiles, belonging to the Sauropterygia. Plesiosaurs first appeared in the latest Triassic Period, …

Discover all about Mosasaurs and Plesiosaurs, the fearsome marine reptiles that ruled the Cretaceous seas. Learn about their evolution, anatomy, and behavior.

During the last 20 million years of the Cretaceous period (Turonian – Maastrichtian ages), with the extinction of the ichthyosaurs and pliosaurs, mosasaurids became the dominant marine …

2009年5月19日 · Marine reptiles were especially successful in the Mesozoic as major predators in the sea. There were more than a dozen groups of marine reptiles in the Mesozoic, of which …

Plesiosaur, any of a group of long-necked marine reptiles found as fossils from the late Triassic Period into the late Cretaceous Period. They inhabited marine areas in the Atlantic near …

2019年1月31日 · Plesiosaurs (Greek for "almost lizards") were large, long-necked, four-flippered marine reptiles that paddled their way through the oceans, lakes, rivers, and swamps of the …

Plesiosaurs (Greek: plesios meaning "near" or "close to" and sauros meaning "lizard") were carnivorous, aquatic (mostly marine) reptiles that lived from the Triassic to the Cretaceous …

Plesiosaurs were a group of marine reptiles that evolved from land-living reptiles in the Triassic period about 210 million years ago. They too, like ichthyosaurs had four flippers, a remnant of …

In the Late Cretaceous period, an era of colossal creatures, two formidable marine reptiles ruled the ancient seas: the Mosasaurus and the Plesiosaur. These massive aquatic predators …

Ancient Sea Reptiles: Plesiosaurs, Ichthyosaurs, Mosasaurs, and More examines the anatomy, behavior, diversity, lifestyle, and evolutionary rise of creatures who conquered the seas for 150 …