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The animation demonstrates the most important types of feathers and their fine structure.
Extinct proboscidea closely related to today's elephants, often hunted by prehistoric man.
Bottlenose dolphins are sea mammals which use ultrasound for orientation.
Unicellular eukaryotes living in freshwaters, capable of feeding autotrophically and...
Moles are small subterranean mammals with modified, spade-like forelegs.
One of the most common types of flatworms.
An ant colony consist of a queen, male ants and workers.
A type of prehistoric reptile having bony plates on its back, which aided thermoregulation.