"Not with that sail."
- —Billy Brennan and Alan Grant attempting to identify Spinosaurus(src)
Baryonyx is an extinct genus of spinosaur, a member and of the same group as and a close relative to the northern African dinosaurs Spinosaurus and Suchomimus. Baryonyx was smaller than these relatives but was still a big predator. It was 10 meters (33 feet) long and 2.5 meters (8.25 feet) high at the hips. However, studies in the fossils of Baryonyx indicate that it had not yet reached its adult stage, so it could be larger, and another study found that there were vertebrae a little larger than others, which would indicate a possible candle or hump in the adult specimen.
It had a long, narrow snout filled with teeth that were cone-shaped - a real difference from the blade-shaped teeth of typical meat-eating dinosaurs.
Because of the shape of its snout and teeth (both of which are similar to those of modern crocodilians), some paleontologists think that Baryonyx ate lots of fish. Others, however, think it ate other dinosaurs. In fact, both ideas are supported by the original Baryonyx specimen from Surrey, England. In the guts of this dinosaur, paleontologists found the partially digested scales of large fish as well as the partially digested bones of a young Iguanodon. This strongly supports the idea that Baryonyx ate both fish and dinosaurs.
A 2022 study comparing the bone densities of Baryonyx and its close relatives, Spinosaurus and Suchomimus revealed that Baryonyx and Spinosaurus possessed very dense bones and could dive and swim in deep water. By comparison, Suchomimus was more suited to wading after prey in shallow water.
InGen created five Baryonyxes in the InGen Compound in Isla Sorna. It was planned to live in its own paddock for Phase I of Jurassic Park, but never made it to Isla Nublar. Its paddock was located near a river, which could have supplied its residents with fish to eat.
Jurassic Park III
When Dr. Alan Grant asked Billy Brennan what kind of dinosaur they saw, Billy thought it was a Suchomimus, because of its snout, Dr. Grant said it wasn't and said bigger, Billy thought Baryonyx but he confirmed they both don't have a sail.
InGen recreated this dinosaur for Masrani Global Corporation's new dinosaur park Jurassic World. While artwork on the park's website was brown with yellow stripes on their backs, legs, and underbelly, an aquamarine eyespot and brown patches on their body and stripes on their tail, with a slender snout and proto-feathers running along the back of their arms and top of their heads, the animals in the park were much different from the real-life counterparts and the Jurassic World website painting. These variants had crocodilian-like armored back and crocodilian-like underbelly, a long but broader snout that narrows as it reaches the tip of the snout, a less pronounced notch in the upper jaw, lacks the triangular crest on the top of its nasal bones, pronated wrists like all of InGen's cloned theropods, its second and third fingers and claws being longer, and more straight and conical teeth. Their coloration is mostly a drab grey with greyish black on the back with turquoise sprinkles all over its back, with a creamy white belly, and turquoise blue on the eye orbit. These Baryonyx were displayed alongside its relative Suchomimus in the Cretaceous Cruise.
- "See?! Not a T. rex!"
"How is this better?!"
- —Claire Dearing and Franklin Webb shortly before being attacked by the Baryonyx(src)
When Isla Nublar's volcano threatened to erupt, it threatened surviving populations of Baryonyx. By 2018, water poisoning and increased acidity caused by toxic emissions from the volcano were predicted to kill populations of aquatic creatures such as fish, endangering piscivorous species such as the Baryonyx and Suchomimus.
When the Dinosaur Protection Group made it to the island to rescue some of its dinosaurs, one Baryonyx appeared from a maintenance tunnel and attempted to attack Claire Dearing and Franklin Webb while lava is pouring in. Despite being pelted with lava, it remains unfazed and determined to get to its potential prey. Before it could attempt to devour them both, Claire and Franklin manage to lock it inside the underground control center, where it presumably met its demise by the surging lava. Another individual was seen and was transported by helicopter to the boat.
At least three Baryonyxes were captured to be sold off at the Lockwood Manor Auction. Two Baryonyxes were briefly seen escaping the estate with all the other dinosaurs, while another one that was bought at the auction was last seen being loaded onto a cargo plane to be delivered to its buyer. It is unknown what happened with this last specimen.
A juvenile Baryonyx with a prosthetic limb was seen placed into a fighting ring battling a juvenile Allosaurus.
- When trying to identify the Spinosaurus during the Isla Sorna Incident of 2001, one of Billy Brennan's guesses was Baryonyx before Dr. Alan Grant corrected him.
- In the teaser for Jurassic World Fallen Kingdom, the Baryonyx that attacked Claire and Franklin made an identical roar to Spinosaurus.
- Many people belived that Baryonyx that chased Claire Dearing and Franklin Webb, is actually Chaos. However, this is unconfirmed to be the same Baryonyx.
Behind the scenes
Baryonyx was originally supposed to be the main antagonist dinosaur of Jurassic Park III and a logo depicting it as well as a storyboard featuring this dinosaur was even made. But Baryonyx was replaced by its larger relative Spinosaurus in the final product. According to Ricardo Delgado, who served as a concept artist for Jurassic Park III in early 2000, several members of the Jurassic Park III would refer to the Spinosaurus as Baryonyx.
It has been confirmed that the Jurassic World website Baryonyx is a paleoart painting artwork done exclusively for the website. 
- Dinosaur Field Guide, page 44.
- Template:Cite journal
- As seen in a InGen report of the active dinosaurs on Isla Sorna, leaked by DPG in 2018.
- Baryonyx is not seen in the tour in the Jurassic Park film, Tour the Island website, InGen Field Journal nor InGen Field Guide. But since it appears in the brochure map, it must have been planned to appear in a future attraction.
- InGen Field Guide, page 9
- Jurassic Park III
- JurassicWorld.com: Baryonyx
- DPG's The Sibo Effect report, written by Emma E. in 2018
- : Arcadia manifest
- Beyond Jurassic Park: "The Art of Jurassic Park III"
- Delgado, Ricardo. (November 13, 2012) Jurassic Park 3- Spinosaur attack. Blogspot.
- Fredricks. (Summer 2013) PT Interview: Ricardo Delgado. Prehistoric Times, 106, p. 50.
|Jurassic World: Fallen Kingdom Prehistoric Creatures|
|Allosaurus • Ankylosaurus • Apatosaurus • Baryonyx • Brachiosaurus • Carnotaurus • Compsognathus • Gallimimus • Indoraptor • Mosasaurus • Parasaurolophus • Pteranodon • Sinoceratops • Stegosaurus • Stygimoloch • Triceratops • Tyrannosaurus rex • Velociraptor|
|Jurassic World: Camp Cretaceous Dinosaurs|
|Ankylosaurus • Baryonyx • Brachiosaurus • Carnotaurus • Ceratosaurus • Compsognathus • Dilophosaurus • Dimorphodon • Gallimimus • Indominus rex • Kentrosaurus • Monolophosaurus • Mosasaurus • Ouranosaurus • Parasaurolophus • Parasaurolophus lux • Pteranodon • Scorpios rex • Sinoceratops • Sino-Spino • Smilodon • Spinosaurus • Stegosaurus • Tyrannosaurus rex • Velociraptor|
|Jurassic World: Dominion Prehistoric Creatures|
|Allosaurus • Ankylosaurus • Apatosaurus • Atrociraptor • Baryonyx • Brachiosaurus • Carnotaurus • Compsognathus • Dilophosaurus • Dimetrodon • Dimorphodon • Dreadnoughtus • Gallimimus • Giganotosaurus • Iguanodon • Lystrosaurus • Microceratus • Moros • Mosasaurus • Nasutoceratops • Oviraptor • Parasaurolophus • Pteranodon • Pyroraptor • Quetzalcoatlus • Sinoceratops • Stegosaurus • Stygimoloch • Therizinosaurus • Triceratops • Tyrannosaurus rex • Velociraptor|