Even more fossil evidence shows the Portuguese/Iberian Baryonyx fossils are, also, found directly associated with Iguanodon teeth, and listed with other such associations as support for opportunistic feeding behaviour in spinosaurs A definitive proof, that Baryonyx wouldn't have only gone after fish. Until the discovery of the closely-related Suchomimus, Baryonyx was the only known piscivorous (fish-eating) dinosaur the crocodile-like jaws and large number of finely serated teeth suggested to scientists that Baryonyx was a fish-eater.Īs confirmation, a number of scales and bones from the fish Lepidotes were also discovered in the body cavity However bones of an immature Iguanodon were also found in direct association with the Baryonyx skeleton. It was a member of the sub-family Baryonychinae.Īquatic Baryonyx based on the 2022 study by Ibrahim et al. The snout probably bore a small crest.īaryonyx was a basal member of the Spinosauridae family within the Megalosauroidea. Sixty-four of the teeth were placed in the lower jaw (mandible), and 32 large ones in the upper (maxilla). The long jaw was distinctly crocodilian, and had 96 teeth, twice as many as its relatives. The skull was set at an acute angle, not the 90° angle common in similar dinosaurs. The long neck was fairly inflexible, and was not S-shaped as in many other theropods. The bone structure suggests a massive bulk of muscle ran down the sides of these front legs, and it therefore seems probable that the claws were placed here. The skeleton was not arranged exactly as it would have been in life (articulated), so the paleontologists reconstructing it placed them on the front feet because these legs were so powerful. This claw measured at about 30.4 centimeters (12 inches). Unlike dromaeosaurids, the creature had a long curved claw on the thumb of each hand, rather than on its hind legs. However, its forelimbs were large for a theropod, this has been speculated by some, that it being an indicator of the theropod spent at least some of its time on all fours. The design of its hips and pelvis suggests that it was bipedal for the purposes of walking from place to place. On the other hand, the specimen's fused sternum indicates that it may have been mature. walkeri holotype specimen (NHM R9951) do not appear to have fused suggests that the individual was not even fully grown, and the mature animal may have been much larger as is the case for some other species of spinosaurids. The fact that the skull and vertebra of B. It probably weighed in the region of 1-2 tons, but analysis of the bones suggests that the only known specimen was not even fully grown. Baryonyx skeletal reconstruction by Dan Folkesīaryonyx estimated about 7.6 to 9 meters long (25 to 29 feet) and around 2.3 meters (7.5 feet) tall at the hip.
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