Megaraptor was a 25 foot long carnivorous dinosaur which lived in Argentina during the late Cretaceous Period 90 million years ago. The fossils of this animal were discovered by the Argentinian paleontologist Fernando Novas in northwestern Patagonia, Argentina in 1996…. Read More ›
Mesozoic
Neovenator
Neovenator salerii was a 25 foot long meat-eating dinosaur which lived in England (and possibly other parts of Europe) during the early Cretaceous Period 125 million years ago. Fossils of this animal were first discovered in 1978 on the Isle… Read More ›
Gastonia
Introduction Gastonia was an armored dinosaur measuring approximately 16.5 feet long which lived in western North America during the early Cretaceous Period approximately 135-130 million years ago. The first specimens were found in eastern Utah in 1989, and more have… Read More ›
Thalassomedon
Thalassomedon, meaning “lord of the sea”, was a 38 foot long elasmosaurid plesiosaur which lived within the Mowry Sea, the shallow sea that covered North America during the middle of the Cretaceous Period 97-95 million years ago. In March 1939,… Read More ›
Edgarosaurus
Edgarosaurus was a 12 foot long short-necked plesiosaur which lived within the Mowry Sea during the middle Cretaceous Period 105-100 million years ago. In 1993, a well-preserved fossil specimen consisting of the skull, neck, and one front flipper (collection ID… Read More ›
Brachauchenius
Brachauchenius was a 15 foot long pliosaur which lived in the shallow sea that once covered the middle of North America during the middle Cretaceous Period 100-90 million years ago. Fossils of this animal were first found by Charles H…. Read More ›
Strophodus
Strophodus was a 10 foot long hybodont shark which specialized in eating shellfish. It appeared during the early Jurassic Period and went extinct during the early Cretaceous Period, making it one of the longest-lived shark genera in the fossil record…. Read More ›
Trinacromerum
Trinacromerum was a 12 foot long plesiosaur which lived within the Mowry Sea, the shallow sea that covered North America during the middle of the Cretaceous Period 95 million years ago. The holotype specimen was found in 1888 within the… Read More ›
Cimoliopterus
Introduction Cimoliopterus was pterosaur with a supposed wingspan of 16 feet or thereabouts, which inhabited Europe and North America during the middle of the Cretaceous Period approximately 100-94 million years ago. There are presently two species of this pterosaur genus:… Read More ›
Coloborhynchus
Coloborhynchus was a species of pterosaur which lived in England (and possibly elsewhere) during the early Cretaceous Period approximately 140 million years ago. The first specimen of this animal was found in the 1800s within the Hastings Beds of the… Read More ›