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2.3" Polished Jurassic Plesiosaur (Colymbosaurus) Bone - England
This is a nicely preserved, 2.3" long section of bone, likely from the cryptoclidid plesiosaur, Colymbosaurus trochantericus. It was dredged from the Smallmouth Sands off of Weymouth Bay, England, making it Upper Jurassic (Kemmeridgian stage) in age, or approximately 154 million years old. The bone has been cut flat and polished to a glossy finish along one end.
Comes with an acrylic stand.
Multiple species of large marine reptiles are dredged out of the Smallmouth Sands, including the plesiosar Colymbosaurus trochantericus, the pliosaur Liopleurodon ferox, and the ichthyosaur Brachypterygius extremus.
Comes with an acrylic stand.
Multiple species of large marine reptiles are dredged out of the Smallmouth Sands, including the plesiosar Colymbosaurus trochantericus, the pliosaur Liopleurodon ferox, and the ichthyosaur Brachypterygius extremus.
About Plesiosaurs
Plesiosaurs were a diverse group of marine reptiles that lived during the Jurassic and Cretaceous periods, thriving in Earth’s oceans for more than 135 million years. Although they lived alongside dinosaurs, plesiosaurs were not dinosaurs; instead, they were fully aquatic reptiles adapted for life in open water. Their most recognizable features included broad, streamlined bodies, four powerful flippers used for underwater “flight,” and a wide range of neck lengths. Fossils of plesiosaurs have been found on every continent, including Antarctica, showing that they inhabited oceans across the globe.
This group included two main body types that filled very different ecological roles. Long-necked plesiosaurs had small heads and slender teeth suited for catching fish and squid, likely relying on stealth and precise strikes. Short-necked plesiosaurs, known as pliosaurs, evolved massive skulls and powerful jaws and became apex predators capable of hunting large prey, including other marine reptiles. Together, these forms made plesiosaurs one of the most successful and adaptable marine reptile groups in Earth’s history, dominating prehistoric seas until their extinction at the end of the Cretaceous.
Plesiosaurs were a diverse group of marine reptiles that lived during the Jurassic and Cretaceous periods, thriving in Earth’s oceans for more than 135 million years. Although they lived alongside dinosaurs, plesiosaurs were not dinosaurs; instead, they were fully aquatic reptiles adapted for life in open water. Their most recognizable features included broad, streamlined bodies, four powerful flippers used for underwater “flight,” and a wide range of neck lengths. Fossils of plesiosaurs have been found on every continent, including Antarctica, showing that they inhabited oceans across the globe.
This group included two main body types that filled very different ecological roles. Long-necked plesiosaurs had small heads and slender teeth suited for catching fish and squid, likely relying on stealth and precise strikes. Short-necked plesiosaurs, known as pliosaurs, evolved massive skulls and powerful jaws and became apex predators capable of hunting large prey, including other marine reptiles. Together, these forms made plesiosaurs one of the most successful and adaptable marine reptile groups in Earth’s history, dominating prehistoric seas until their extinction at the end of the Cretaceous.
SPECIES
Colymbosaurus trochantericus
LOCATION
Weymouth Bay, England
FORMATION
Smallmouth Sands
SIZE
2.3 x 2.25 x 2"
CATEGORY
SUB CATEGORY
ITEM
#320980
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