Dinosaur feathers in amber This birdlike dinosaur's plumage was much more reduced compared with the feathers on some of its contemporaries, which suggests that feathering was already diversified by the Late Jurassic, adapted to different ecological niches and purposes, the researchers said. (The Jurassic period lasted from about 199.6 million to 145.5 million years ago.)
Frilled Sharks are deepwater fish that are rarely seen at the surface, though they are often caught by bottom trawlers. Long and eel-like, Frilled Sharks are sometimes considered to be “throwbacks” to the early period of shark evolution though their existence today is testament to the success they have found in their particular ecological niche.
The White-tailed Eagle (Haliaeetus albicilla) — also called the Sea Eagle, Erne (sometimes Ern), and White-tailed Sea-eagle — is a large bird of prey in the family Accipitridae which includes other raptors such as hawks, kites, and harriers. It is considered a close cousin of the Bald Eagle and occupies the same ecological niche, but in Eurasia.