“Lizard of the Meuse River”
Late Cretaceous, 70-66 million years ago

Mosasaurus was a type of extinct marine reptile similar to a giant monitor lizard, but with fins. It would have been an apex predator of the Cretaceous seas, growing to almost 60 feet long!
The first Mosasaurus fossil was found in 1764 (about 50 years before the first dinosaur remains), though it wasn’t recognized as a marine reptile until around 1800 (roughly 40 years before the term “dinosaur” was coined). While it was instrumental in the understanding of extinction – and by extension modern biology as we know it – Mosasaurus was largely forgotten until its triumphant rediscovery in November 2014 as part of a movie trailer.

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A nearly complete fossil of a prehistoric marine reptile with preserved soft tissue has been found in Colombia, at a spot several hundred miles from the Caribbean coast, Maria Parámo, colombian paleontologist from National University said.
Called Eonatator coellensis, because it as found in Coello town; the mosasaurus species is 2.8 m (9,1 feet) with a head lenght of 41,5 cm (16 inch), discovered in rocks dating back 80 million years - during the Cretaceous period- Based on the quantity, morphology and length of the preserved vertebrae, paleontologist estimates that the length of the animal’s tail was similar to that of the rest of its body. The soft parts preserved in the specimen provides new evidences of ovoviviparity in mosasaurs.

Of all the creatures of Hell’s Aquarium, none were as nightmarish as the Mosasaurs. One such Mosasaur, Tylosaurus proriger, grew to be fifteen metres long and weighed in at about seven metric tonnes - that is, if it made it that far. Mosasaurs ate almost anything that moved - fish, turtles, sharks… and even other Mosasaurs. Life in Hell’s Aquarium wasn’t a walk in the park.

This Tylosaurus got off lucky, though not unscathed. A chunk of her left hind fin is missing - perhaps torn off by an older Mosasaur - but this is barely a scratch. Now she is the biggest set of teeth for miles around, and this watery kingdom is hers.

Hope you enjoy!

“Globe teeth”
Late Cretaceous, 70-60 million years ago

Whereas most mosasaurs had sharp, flesh-tearing teeth, Globidens’ teeth were rounded and acted more like nutcrackers. Such adaptations would’ve made short work of ammonites, nautiloids, and other shelled denizens of the Cretaceous seas. It is named partially for its specialized dentition, but mostly for its corporate sponsor, GlobiDens™ International, LLC.




El fósil más completo de un mosasaurio halisaurino conocido hasta ahora en el mundo fue recientemente hallado en Coello, cercano a Bogotá, Colombia. La nueva especie llamada Eonatator coellensis fue encontrado en rocas del periodo cretácico, de hace alrededor de 80 millones de años.
La paleontóloga colombiana María Páramo (Universidad Nacional) quien lideró la investigación, descubrió que el reptil conserva casi todas las partes, excepto la cola, además de partes blandas como pulmones, páncreas y fibras musculares. Ofrece posibles evidencias de gestación interna en mosasaurios.