The humped-tooth shark

Hybodus (“humped tooth”) is an extinct genus of Chondrichthyans. First appearing towards the end of the Permian period, and disappearing during the Late Cretaceous. Scientists are still unclear as to why Hybodus went extinct.

Family: † Hybodontidae

Genus: †Hybodus

Species: †butleri, rajkovichi, montanensis, houtienensis, obtusus, fraasi, basani  


Phylum– Chordata

Class– Chondrichthyles

Order– Hybodontiformes

Super Family– Hybodontoidea

Family– † Hybodontidae

Common Name– Humped-Tooth

Genus– †Hybodus

Species– †butleri, rajkovichi, montanensis, houtienensis, obtusus, fraasi, basani  

Status: EXTINCT. Hybodus appeared on Earth at the end of the Permian Period and thrived during the Triassic, Jurassic, and Cretaceous (260-75 million years ago).

Average Size and Length: Hybodus was about 6.6 feet long.

Average Weight: It is estimated to weigh anywhere from 100 to 200 pounds.

Current Rare Mythical Sightings: Hybodus is commonly featured on BBC series and Discovery Channel series and is also a typical character in video games.

Teeth and Jaw: Hybodus had a small mouth and two types of teeth. The first set of teeth were sharp and designed to rip into its prey or catch slipper prey while the second, flatter teeth probably helped them crush.  

Demographic, Distribution, Habitat, Environment and Range: Shallow seas across the world. The youngest Hybodus fossils come from the Dinosaur Park Formation. They date from 68.6 to 66 million years ago. The first fossilized teeth from Hybodus were found in England around 1845.

Diet: Since Hybodus had two types of teeth, research suggests they may have had a wide variety in their diet and were opportunistic predators. Hybodus probably ate fish, small mammals, and pretty much could handle any other type of smaller prey.

Aesthetic Identification: Hybodus looked similar to modern species. Some scientists believed Hybodus looked like a small Great White shark. It had the classic streamlined shark shape, complete with two dorsal fins, one with a bony spike on top that probably aided in defense.

Biology and Reproduction: The males had claspers.

Speed: Hybodus was thought to swim with expert precision.