An extinct group of Cephalopoda, with solid external skeletons. They are excellent index fossils.
Ammonites, prehistoric creature, Ammonoidea, fossil, Cretaceous period, Jurassic period, Devonian period, siphuncle, exoskeleton, Cephalopoda, molluscs, cephalopods, animal, biology
A species of mollusk widespread in freshwaters.
A widespread snail species, also popular as food.
Long-necked herbivorous dinosaur with a robust body.
The archaeopteryx shows characteristics of both birds and reptiles. It is probably the ancestor of birds.
This animation presents some animals and plants that lived between the Devonian and Permian periods (358–299 million years ago).
Deinonychus antirrhopus, the "terrible claw", was a carnivorous dromaeosaurid dinosaur.
The last Ice Age ended about 13 thousand years ago.
The ‘upright man’ used tools and could set fire.
A prehistoric amphibian and an early representative of the Tetrapods, which became extinct 360 million years ago.
Eupteryds are an extinct group of Paleozoic aquatic arthropods.
Certain mollusks produce pearls in order to protect themselves from parasites or debris. Pearls are used for making jewelry.
This 3D scene presents the flora and fauna of the last period of the Palaeozoic Era.
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.
A transitional form between fish and tetrapods, or four-limbed vertebrates.
Large carnivores, perhaps the best known of dinosaurs.
A type of herbivorous dinosaur easily recognizable by its large frill and three horns which lived in the Cretaceous period.
The ancestors of Arachnida and Crustacea belonged to the class Trilobita.
Extinct proboscidea closely related to today's elephants, often hunted by prehistoric man.
The Earth's continents have been in constant motion during the history of the planet.
Several analogous types of eyes have developed independently through convergent evolution.
Jellyfish are free-swimming marine animals, a species of Cnidaria, the most ancient group of Eumetazoans.
One of the most common types of flatworms.
The most ancient group of animals, they live underwater, lack real tissues and body symmetry.