Plotopteridae they became extinct. That they became extinct at the same time as the giant penguins of the Southern Hemisphere, which also coincided with the radiation of the seals and dolphins, has led to speculation that the expansion of marine mammals was responsible for the extinction of the Plotopteridae, though this has not been formally tested. Plotopteridae Plotopteridae is the name of an extinct family of flightless seabirds from the order Suliformes. Related to the gannets and boobies, they exhibited remarkable convergent evolution with the penguins, particularly with the now extinct giant penguins. That they lived in the North Pacific, the
The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals is an encyclopedia of prehistoric and extinct animals which had a vertebrate. The "Encyclopedia" is published by Chartwell Books. Early Tetrapods Lepospondyls Early Reptiles Turtles, Tortoises, and Terrapins Semi-Aquatic and Marine Reptiles Marine Reptiles Early Diapsids Snakes and Lizards Early Ruling Reptiles Crocodiles Flying Reptiles Carnivorous Dinosaurs Early Herbivorous Dinosaurs Long-necked Browsing Dinosaurs Fabrosaurs, Heterodontosaurs, and Pachycephalosaurs Hypsilophodonts Iguanodonts Duckbilled Dinosaurs Armored Dinosaurs Horned Dinosaurs Early and Flightless Birds Water and Land Birds Pelycosaurs Theraspids Primitive Mammals Marsupials Glyptodonts, Sloths, Armadillos, and