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Estesesox

Introduction Pikes are some of the largest carnivorous freshwater fish today. Some species grow to be 5 feet long and are the dominant predators in their watery world. Pikes belong to the family Esocidae, which also includes blackfish and mud… Read More ›

Acronichthys

Acronichthys was a tiny fish measuring just 4 cm (1.6 inches) long which lived in freshwater environments within western North America during the late Cretaceous Period 90-66 million years ago. Fossils of this fish, or fossils which might belong to… Read More ›

Cladoselache

Cladoselache was a 6 foot long primitive proto-shark which lived during the late Devonian Period 370-360 million years ago. Several publications from the 20th Century state that Cladoselache was the oldest-known shark. However, studies from the early 2000s onwards have… Read More ›

Stethacanthus

Stethacanthus was a primitive proto-shark which swam the seas from the late Devonian Period to the end of the Carboniferous Period approximately 380-300 million years ago. Fossils of various species of this genus have been found worldwide. Stethacanthus is distinctive… Read More ›

Diplodoselache

Diplodoselache, meaning “double-toothed shark”, was a prehistoric freshwater proto-shark which lived in Scotland during the early Carboniferous Period 345-330 million years ago. Teeth of this animal were discovered in the Wardie Shale Formation of Scotland’s Midland Valley during the 1840s,… Read More ›

Aerotitan

Aerotitan was a pterosaur which lived in South America during the late Cretaceous Period 70 million years ago. The only fossil of this creature, consisting of just the front end of the upper jaw, was discovered in the early 2000s… Read More ›

Sulcusuchus

Sulcusuchus was a small polycotylid plesiosaur which lived off the coast of Argentina during the late Cretaceous Period around 70 million years ago. The fossils of this animal (collection ID code: MLP 88-IV-10-1) were first discovered 25 km north of… Read More ›