More than 285 species have been assigned to this genus (Roman, 1965, p. 689). Due to the very large number of species, several attempts have been made to subdivide this genus into subgenera or ...
Distinguished from Cosmocyphus only by complete lack of biserially arranged pore-pairs adapically. Distinguished further from Phymosoma by the sunken peristome and lack of phyllodes. The type species ...
Quarter of a million host-parasite records, detailing helminth parasites their associated host species and locality, extracted from 28,000 references. In 1922 Dr H.A. Baylis, then head of what today ...
Killer whales (also called orcas) are apex predators, meaning they are at the top of their food chain. They feed on fish and squid like other odontocetes (toothed whales) do, but will also target ...
Discover facts, figures and images for more than 300 dinosaurs. From slow, plant-eating giants to fierce scavengers and hunters, dinosaurs once dominated the land. Search our alphabetical list, or ...
A jar of krill specimens with visible eye spots. Blue whales eat huge volumes of these small crustaceans. Blue whales eat krill - tiny, shrimp-like crustaceans that live throughout Earth's oceans. The ...
Can you find Dippy's nostrils? What feature does Diplodocus share with humans but few other dinosaurs? Rotate, zoom in and explore the features of this popular dinosaur.