Nannopterygius, meaning “tiny fin”, was a genus of ichthyosaur which lived around Europe from the late Jurassic to the early Cretaceous Period approximately 152-140 million years ago. There are currently six species assigned to this genus: Nannopterygius saveljeviensis. © Jason… Read More ›
Brachypterygius, meaning “short fin”, was an ichthyosaur which lived around England during the late Jurassic Period 155-150 million years ago. Fossils of this animal were found at Smallmouth Sands near the seaside town of Weymouth, Dorset, England within the rock… Read More ›
Undorosaurus was a medium-sized ichthyosaur which lived in northern Europe during the late Jurassic Period 150-145 million years ago. Fossils of this animal have been found in Norway, Poland, and western Russia. In fact, it was named after the village… Read More ›
Asteracanthus was a 6 foot long hybodont shark which lived from the middle Jurassic Period to the middle Cretaceous Period 165-100 million years ago. Unlike most prehistoric sharks which are known only from teeth, Asteracanthus is also known from some… Read More ›
Todiltia schoewei was a small prehistoric saltwater fish which lived in North America during the middle Jurassic Period 165 million years ago. Fossils of this fish have been found in Colorado and New Mexico within the Todilto Limestone Member of… Read More ›
Occithrissops willsoni was an 8 inch (20 cm) long saltwater fish which lived within the Sundance Sea during the middle Jurassic Period 165 million years ago. During the middle of the Jurassic Period, much of the center of North America… Read More ›
Introduction The Morrison Formation of western North America is one of the most well-studied geological formations within the world. These rock layers, which extend from Montana to New Mexico and from Utah to South Dakota, are dated to the late… Read More ›
Introduction For paleontologists, determining whether fossils belong to an animal which is already known or if they belong to a hitherto undiscovered species can be a bit tricky, especially if the animal is only known from incomplete remains. Suppose you… Read More ›
Plesiosuchus was a 20 foot long marine crocodylomorph which lived in the tropical sea which once covered Europe during the late Jurassic Period 155-150 million years ago. In the 1860s, fragmentary fossils were discovered in Dorset, England by a local… Read More ›
Ornitholestes, “the bird thief”, was a small meat-eating dinosaur which lived in western North America during the late Jurassic Period about 154 million years ago. Since its discovery in the year 1900, Ornitholestes has come to be regarded as the… Read More ›
DINOSAURS AND BARBARIANS 