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March 19, 2012
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InGen Files Mosasaur by Miyess InGen Files Mosasaur by Miyess
Jurassic Park InGen Files: Tylosaurus proriger

Age: Late Cretaceous (Turonian-Maastrichtian)

Diet: Carnivore

Length: Around 15 meters when full grown.

Mosasaurs were large, 15 meter long aquatic carnivores from the Late Cretaceous about 90-65 million years ago. The name means 'Meuse Lizard', referring to where the first fossils were found. They prey on a range of sea birds, sharks, large fish, and other marine reptiles.

Mosasaurs breathed air, they were powerful swimmers, and were well-adapted to living in the warm, shallow epicontinental seas prevalent during the Late Cretaceous Period. Mosasaurs were so well adapted to this environment that they gave birth to live young, rather than return to the shore to lay eggs, as sea turtles do. They had a body shape similar to that of modern-day monitor varanid lizards, but were more elongated and streamlined for swimming. Their limb bones were reduced in length and their paddles were formed by webbing between their elongated digit-bones. Their tails were broad, and supplied the locomotive power. Rather than snake-like undulatory movement, the body probably remained relatively stiff to improve hydrodynamic efficiency through the water while the end of the tail provided strong propulsion. The animals lurk and rapidly pounce on passing prey, rather than hunting for it. Mosasaurs had a double-hinged jaw and flexible skull (much like that of a snake), which enabled them to gulp down their prey almost whole, a snakelike habit...

After realizing that the DNA he was working with was not from a dinosaur, but a Mosasaur, Dr. Wu began work on breeding a Mosasaur. Obtaining DNA from sea creatures is rare to say the least, since there are no mosquitoes to suck Mosasaur blood out at sea. He theorized that at some point during the Cretaceous, a Mosasaur must have beached itself and a mosquito took the blood meal then. It was very difficult working with the Mosasaur genome as it was extremely fragmentary. Wu filled in the genetic gaps with amphibian DNA which was a perfect match with most species (especially when repairing degraded sex chromosomes). He also filled other gaps in the Mosasaur genome with Monitor lizard, and sea-snake DNA as Mosasaurs are varanoids and thus closely related to both monitor lizards and snakes.

It is strongly suspected that it was a Mosasaur (or some other marine reptile) that attacked and killed the people in the boat during the events of the 2001 incident.

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Asuma17 Featured By Owner Feb 15, 2014  Hobbyist General Artist
It can be labeled Tylosaurus. nublarensis since this Tylosaurus is likely a genetically spliced specimen, since apparently Mosasaurs didn't have any spikes or armor plating on their back in reality.
Miyess Featured By Owner Apr 5, 2014   Digital Artist
I guess, though I don’t see the point really.

I mean, it’s done with some JP species where there is obvious genetic tampering like the Dilophosaurs, but then again; ALL Jp species have had foreign DNA spliced into their genomes – So why is the T-rex still referred to as Tyrannosaurus rex and not Tyrannosaurus rex ranaenisis (rana = frog genus name)?

Also, I’m getting pretty sick of fans sticking sornaensis or nublarensis after insert genus name here bred by InGen. We only refer to the two raptor breeds like that because that is the order we saw them in the movies (Let’s not kid ourselves), and sure people can argue that JP scientists maybe referred to Velociraptor nublarensis as such because they were the ones that eventually got green lit to be sent to Nublar and the other ones were left on Sorna (though it’s a slight stretch), but honestly you’d think they be more creative with species names – you can’t go around calling everything nublarensis or sornaensis.

I’ve made a case here that the armour is due to the JP Mosasaurs having crocodile DNA spliced into their genomes. Personally I think Tylosaurus proriger works fine, but if you must change it I’m sure something like Tylosaurus porosus would be an acceptable name.

That’s my two cents on the topic. :twocents:
JonaGold2000 Featured By Owner Feb 11, 2014  Hobbyist
A 1 foot version of this woul dmake a cool creature for as a pet. Like a piranha
Miyess Featured By Owner Feb 11, 2014   Digital Artist
In the book, InGen was planning just that. They would also design the animals so that they could only eat InGen made food (or they would die) and make a whole lot of money...
JonaGold2000 Featured By Owner Feb 12, 2014  Hobbyist
jurassiccheif Featured By Owner Jul 24, 2013
that's the dinosaur from the 2012 jurassic park game

Miyess Featured By Owner Aug 1, 2013   Digital Artist
Not actually a dinosaur, it’s a Mosasaur – a marine reptile (more closely related to monitor lizards than dinosaurs). But yes, it did feature in the recent Telltales JP game.
Hellraptor Featured By Owner Apr 17, 2012  Hobbyist Digital Artist
Really nice, i also first thought it was spinosaurus that killed them but now with the introduction of Mosasaurus it makes a lot more sense.
Miyess Featured By Owner Apr 17, 2012   Digital Artist
I should draw a scene of the Mosasaur attacking that boat in the mist...
Hellraptor Featured By Owner Apr 18, 2012  Hobbyist Digital Artist
that would be very nice, i cant wait.
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