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Eurypterids are an extinct group of Palaeozoic aquatic arthropods.
prehistoric creature, fossil, sea scorpions, extinct, Eurypterid, Palaeozoic, history of the Earth, geologic epoch, Cambrian period, Permian period, abdomen, chelicera, chitin layer, armour, cephalothorax, carapace, arthropod, predator, carnivorous, arthropods, animal, biology
The ancestors of Arachnida and Crustacea belonged to the class Trilobita.
An extinct group of Cephalopoda, with solid external skeletons. They are excellent index fossils.
This animation presents some animals and plants that lived between the Devonian and Permian periods (358–299 million years ago).
The Earth's continents have been in constant motion during the history of the planet.
The fat-tailed scorpion is one of the world's most dangerous scorpions.
This 3D scene presents the flora and fauna of the last period of the Palaeozoic Era.
Fish-like marine dinosaurs which resembled dolphins; a good example of convergent evolution.
A prehistoric amphibian and an early representative of the Tetrapods, which became extinct 360 million years ago.
A transitional form between fish and tetrapods, or four-limbed vertebrates.
Long-necked herbivorous dinosaur with a robust body.
Deinonychus antirrhopus, the 'terrible claw', was a carnivorous dromaeosaurid dinosaur.
A prehistoric flying reptile, similar to birds. However, there is no direct evolutionary link between the two.
A type of prehistoric reptile having bony plates on its back, which aided thermoregulation.
Large carnivores, perhaps the best known of dinosaurs.
A type of herbivorous dinosaur easily recognisable by its large frill and three horns which lived in the Cretaceous period.