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Tylosaurus

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A reconstruction of Tylosaurus rex in the Cretaceous-era Western Interior Seaway of North America.

A reconstruction of Tylosaurus rex in the Cretaceous-era Western Interior Seaway of North America.

game reconstitution Cretaceous Tylosaurus
Illustration of an Elasmosaurus platyurus devouring a juvenile Tylosaurus while a Hesperornis swims by in the background, based on recent research on Elasmosaurid paleobiology which shows that they were far more raptorial than previously thought: https://sobekswimmingpool.wordpress.com/2021/05/30/what-sea-dragons-ate-plesiosaur-diets-revised/

Illustration of an Elasmosaurus platyurus devouring a juvenile Tylosaurus while a Hesperornis swims by in the background, based on recent research on Elasmosaurid paleobiology which shows that they were far more raptorial than previously thought: https://sobekswimmingpool.wordpress.com/2021/05/30/what-sea-dragons-ate-plesiosaur-diets-revised/

juvenile Elasmosauridae Elasmosaurus Plesiosauria +1
The Canadian Fossil Discovery Centre in Morden boasts the largest collection of marine invertebrate fossils in Canada. Visitors to the museum not only get to see this collection, but can join a dig in search for more fossils at a 109-acre escarpment property. Photo credit: Robyn Hanson

The Canadian Fossil Discovery Centre in Morden boasts the largest collection of marine invertebrate fossils in Canada. Visitors to the museum not only get to see this collection, but can join a dig in search for more fossils at a 109-acre escarpment property. Photo credit: Robyn Hanson

museum Canada fossil Tylosaurus +1
Tylosaurus kansasensis mounted skeleton in the Rocky Mountain Dinosaur Resource Center in Woodland Park, Colorado

Tylosaurus kansasensis mounted skeleton in the Rocky Mountain Dinosaur Resource Center in Woodland Park, Colorado

Dinosauria Tylosaurinae Tylosaurus skeleton
Photo montage of different specimens of mosasaurs: Opetiosaurus Vallecillosaurus Halisaurus Plotosaurus Platecarpus Tylosaurus
Taxa Plotosaurus

Photo montage of different specimens of mosasaurs: Opetiosaurus Vallecillosaurus Halisaurus Plotosaurus Platecarpus Tylosaurus

specimen Halisaurus Platecarpus Plotosaurus +1
Shown is a drawing from Williston (1898) that shows the skeletons of three common species of mosasaurs from Kansas; Clidastes propython, Platecarpus tympaniticus and Tylosaurus proriger. Although these three species are shown about the same size in the drawing, in life, Clidastes was the smallest (about 12-15 feet); Platecarpus was the next largest (about 24 feet) and Tylosaurus was the largest (30 plus feet):

Shown is a drawing from Williston (1898) that shows the skeletons of three common species of mosasaurs from Kansas; Clidastes propython, Platecarpus tympaniticus and Tylosaurus proriger. Although these three species are shown about the same size in the drawing, in life, Clidastes was the smallest (about 12-15 feet); Platecarpus was the next largest (about 24 feet) and Tylosaurus was the largest (30 plus feet):

drawing Clidastes Platecarpus Tylosaurus +1
Digital copy of 1978 slide. Natural History Museum, Smithsonian Institution, Washington, D.C. Complete indexed photo collection at WorldHistoryPics.com.

Digital copy of 1978 slide. Natural History Museum, Smithsonian Institution, Washington, D.C. Complete indexed photo collection at WorldHistoryPics.com.

museum China Tylosaurus
Tylosaurus proriger with tail fluke.

Tylosaurus proriger with tail fluke.

Tylosaurus
New reconstruction of Tylosaurus proriger, based on recent data about mosasaur's soft tissue

New reconstruction of Tylosaurus proriger, based on recent data about mosasaur's soft tissue

tissue Tylosaurus
Tylosaurus reconstruction. From Osborn, H. F. (1917). The origin and evolution of life, on the theory of action, reaction and interaction of energy.

Tylosaurus reconstruction. From Osborn, H. F. (1917). The origin and evolution of life, on the theory of action, reaction and interaction of energy.

Tylosaurus evolution
Depiction of Tylosaurus, from Lucas, F.A., 1901. Extinct Animals.
Taxa Tylosaurus

Depiction of Tylosaurus, from Lucas, F.A., 1901. Extinct Animals.

Tylosaurus
Fragmentary fossils of various tylosaurines MCM.M0009 (A ; Taniwhasaurus 'mikasaensis'), SAM-PK-5265 (B ; Taniwhasaurus 'capensis') and MNHN 1896-15 (C ; Tylosaurus gaudryi).

Fragmentary fossils of various tylosaurines MCM.M0009 (A ; Taniwhasaurus 'mikasaensis'), SAM-PK-5265 (B ; Taniwhasaurus 'capensis') and MNHN 1896-15 (C ; Tylosaurus gaudryi).

fossil Hainosaurus Taniwhasaurus Tylosaurus
Restorations of Pteranodon sternbergi (left), Pteranodon longiceps (top), Nyctosaurus (right), and Tylosaurus (bottom).

Restorations of Pteranodon sternbergi (left), Pteranodon longiceps (top), Nyctosaurus (right), and Tylosaurus (bottom).

Hainosaurus Nyctosaurus Pteranodon Tylosaurus
Tylosaurus swimming through the sea

Tylosaurus swimming through the sea

Hainosaurus Tylosaurus
Drawing of the skull of MCZ 4374, the holotype of Macrosaurus proriger (Tylosaurus proriger) from Cope (1870)

Drawing of the skull of MCZ 4374, the holotype of Macrosaurus proriger (Tylosaurus proriger) from Cope (1870)

drawing holotype Drinker Hainosaurus +3
Bones and remains of prehistoric animals A massive marine lizard and apex predator, growing to length of 14 m (46 ft).[1]

Bones and remains of prehistoric animals A massive marine lizard and apex predator, growing to length of 14 m (46 ft).[1]

bone predator Tylosaurus

News

New Species of Enormous Mosasaur is Described
predator Campanian Cretaceous Late Cretaceous fossil Mosasaurus Tylosaurus new species
A newly named giant Tylosaurus species has been named by researchers.  The new species of Tylosaurus has been erected based on fossils found in northern Texas. This enormous predator ruled the ancient seas around 80 million years ago (Campanian faunal stage of the Late Cretaceous).  The scientific paper was published in the Bulletin of the American
26/05/2026 everythingdinosaur
Scientists discover giant sea predator Tylosaurus rex that terrorized ancient oceans
predator fossil Mosasaurus Tylosaurus discovery evolution
A colossal new sea predator named Tylosaurus rex has been identified from fossils found in Texas, revealing a brutal 43-foot-long hunter that ruled ancient oceans 80 million years ago. The discovery not only introduces one of the biggest mosasaurs ever known, but also shakes up long-standing ideas about how these marine reptiles evolved.
23/05/2026 sciencedaily
Updating our Tylosaurus Notes to Help Customers
Dinosauria Tylosaurus
With the arrival of the new CollectA Tylosaurus figure, we are busy updating our notes on this enigmatic marine reptile.  The new CollectA Age of Dinosaurs Prehistoric Life Tylosaurus figure replaces an earlier Tylosaurus model.  Although, the new figure is just twenty centimetres long, model collectors have praised its detail.  Just as a manufacturer updates
23/05/2026 everythingdinosaur
‘T. rex’ Mosasaur Ruled the Seas 80 Million Years Ago
‘T. rex’ Mosasaur Ruled the Seas 80 Million Years Ago
tooth Mosasaurus Tylosaurus new species
Paleontologists have described a gigantic new species of mosasaur -- stretching up to 13.2 m (43 feet) long and armed with serrated teeth -- and given it an unexpected name: T. rex (short for Tylosaurus rex). The post ‘T. rex’ Mosasaur Ruled the Seas 80 Million Years Ago appeared first on Sci.News: Breaking Science News.
21/05/2026 sci-news