Leedsichthys was a very large prehistoric saltwater fish which lived during the middle and late Jurassic Period, circa 165-150 million years ago. It was named in 1889 in honor of Alfred N. Leeds who found the first specimen. Leedsichthys belonged… Read More ›
Aegirosaurus leptospondylus was a 6 foot long ichthyosaur which lived in the seas around Europe during the late Jurassic Period and early Cretaceous Period, roughly 147-135 million years ago. Aegirosaurus belonged to a family of ichthyosaurs called the ophthalmosaurids (Bardet… Read More ›
Dimorphodon was a species of pterosaur that lived during the early Jurassic Period about 195-190 million years ago. It measured over 3 feet long from its nose to the end of its long tail (which may or may not have… Read More ›
Our story takes place on a street in Paris, France called the Rue Saint-Séverin sometime during the 1730s – nobody is sure of the exact year when these events supposedly occurred. Somewhere along this street was a print shop owned… Read More ›
Mierasaurus was a turiasaurian sauropod dinosaur which lived in Utah during the early Cretaceous Period approximately 139 to 136 million years ago. Mierasaurus lived during a time when the environment of prehistoric Utah became substantially wetter and more humid than… Read More ›
Hastanectes valdensis, whose name means “the Hastings swimmer from the Weald”, was a prehistoric marine reptile which swam the seas around Europe during the early Cretaceous Period approximately 140 to 135 million years ago. The first fossils of this creature… Read More ›
Leptocleidus was a genus of plesiosaur which lived in the oceans during the early Cretaceous Period about 135 to 125 million years ago. It measured just 10 feet long, which is quite small for a plesiosaur. Three species of Leptocleidus… Read More ›
Lissodus was a prehistoric shark which lived from the early Triassic to the middle Cretaceous Period, about 250 to 110 million years ago, give or take. Named in 1835, it was a member of a group of sharks called the… Read More ›
NOTE: This article was originally published on May 4, 2022. On December 30, 2025, it was updated and re-uploaded. Polyacrodus was a genus of prehistoric shark, composed of several species, with fossils found in North America, South America, Europe, Asia, and… Read More ›
Stegosaurus stenops. © Jason R. Abdale (August 1, 2020) Stegosaurus is one of the most famous dinosaurs in the world. With its large back plates and spiked tail, it’s commonly seen in every child’s dinosaur book and is one of… Read More ›
DINOSAURS AND BARBARIANS 