Baryonyx

Baryonyx was a remarkable spinosaurid theropod that prowled the riverbanks and wetlands of Early Cretaceous Europe around 130-125 million years ago. Unlike most large theropods that hunted land animals, Baryonyx was adapted for catching fish, sporting a long, narrow snout filled with finely serrated, conical teeth remarkably similar to those of modern crocodilians. Its most striking feature was an enormous curved claw on each hand's first finger, measuring about 31 centimeters (roughly a foot) long, which may have been used to hook fish from the water much like a grizzly bear.

The discovery of Baryonyx in 1983 was a genuine stroke of luck. Amateur fossil collector William J. Walker was exploring the Smokejack Clay Pit in Surrey, England, when he noticed a large claw protruding from the clay. Recognizing its significance, he alerted the Natural History Museum in London. Paleontologists Alan Charig and Angela Milner excavated the site and eventually described the new species in 1986, naming it in honor of Walker's discovery.

The holotype specimen proved to be one of the most complete theropod skeletons ever found in the United Kingdom, containing about 70% of the animal's bones including skull material — a rarity for British dinosaurs. Analysis of its stomach contents revealed the partially digested scales of a large fish and bones from a young Iguanodon, suggesting Baryonyx was an opportunistic predator that wouldn't turn down a terrestrial meal when available.

Baryonyx belongs to the Spinosauridae family, making it a relative of the famous Spinosaurus from Africa. However, unlike its sail-backed cousin, Baryonyx lacked the dramatic neural spines along its back. Additional specimens have been found across England and the Iberian Peninsula, though some have since been reclassified into different genera as scientists better understand spinosaurid diversity.