Western gorillas, 19th century
Southern plains gray langur, 19th century
Sumatran rhinoceros, 19th century
Nubian giraffe, 19th century
Hippopotamuses, 19th century
Senegalese lion, 19th century
Red-shanked douc, 19th century
Black-striped wallaby, 19th century
Diademed sifaka, 19th century
Red ruffed lemur, 19th century
Mantled guereza, 19th century
Potto, 19th century
Madagascan flying fox, 19th century
Pel's flying squirrel, 19th century
Malabar giant squirrel, 19th century
Malayan tapir, 19th century
Alpaca, 19th century
Indian antelope, 19th century
Lion tamarin, 19th Century illustration
Hamadryas baboon, 19th century
Plains viscacha, 19th century
Ocelot, 19th century
Bengal tiger, 19th century
Leopard, 19th century
Large Indian civet, 19th century
Monkey skeleton, 18th century
Steller's sea cow, 19th century
Dromornis stirtoni and its young, illustration
Orangutans, 19th Century illustration
Cebid monkey, 19th century
Loris, 19th century
Greater bulldog bat, 19th Century illustration
Flying squirrel, 19th Century illustration
Surinam caiman, 18th century
Haeckel on the Evolutionary History of Man, 1877
Groundhog, 19th century
European mouflon, 19th century
Nubian ibex, 19th century
South African antelope, 19th century
Woolly mammoth skeleton, 19th century
Jaguar hunting its prey in the Amazon, 19th century
South American tree frogs, 19th century
Thrinaxodon cynodont and pups, illustration
Capuchin monkey, illustration
Emerald tree boa, 19th century
Sabretooth cats and hippopotamus prey, illustration
Giant ground sloth skeleton, 19th century
Gaetano Osculati, Italian naturalist
Strawberry Bank insects, illustration
Taruca, illustration
Barbary stag, 19th century illustration
Snow leopard, 19th century
Pyrenean brown bear, 19th century
Sable, 19th century
Common genet, 19th century
Temnodontosaurus ichthyosaur and prey, illustration
Desert oasis, 19th century
Sinoceratops baby dinosaur, illustration
Facial angle theory of Petrus Camper, illustration
Sabretooth cats and mammoth prey, illustration
Sivatherium giraffid mammal, illustration
Squirrel monkey, 19th century illustration
Lemur, 19th century illustration
Two-toed sloths, 19th century illustration
Galapagos gurnard, 19th century
Player scorpionfish, 19th century
Narrow-headed pufferfish, 19th century
Crowned pigeon, 19th Century illustration
Dolphinfish and other fish, 19th century
Tropical fish, 19th century
Prosauropod and theropod dinosaurs, illustration
Iguanadon dinosaur trackway, illustration
Pinacosaurus death hole, illustration
Apatosaur dinosaur swimming, illustration
Dunkleosteus hunting its prey, illustration
Hannibal mounted on a war elephant, 218 BC
Scelidotherium prehistoric mammal fossils, 19th century
Kessels waving flag on top of a beached whale, illustration
Ichthyosaur preying on an ammonite, illustration
Temnodontosaurus ichthyosaurs, illustration
Ornithocheirus pterosaur, illustration
Charles John Andersson, Swedish naturalist
Christian Ehrenberg, German naturalist
Richard Owen, British zoologist and palaeontologist
Haeckel on animal and human embryos, 1874
Red kangaroo, 19th century illustration
Banded rattlesnake, 19th century
Boa constrictor, 19th century
Arsinoitherium rhinoceros-like herbivore, illustration
Giant wombat, illustration
Blue antelope, illustration
Megacerops extinct rhino, illustration
American Bison, illustration
Mouflon, 19th century illustration
A vector illustration of Wild Animals Background
Stag, illustration
Giraffe, illustration
Humboldt's hog-nosed skunk, illustration
Geoffroy's wild cat, illustration
Mountain degu, illustration
Brazilian tuco-tuco, illustration
Crested porcupine, 19th century illustration
Mountain hare, 19th century illustration
Antelope, 19th century illustration
Mephitis nasuta, 19th century illustration
Sykes' monkey, 19th century illustration
Dryopithecus extinct ape, illustration
Sheep struck by lightning, illustration
Molluscs, 19th century illustration
Prehistoric macaques, 19th Century illustration
Lemur, marmoset and baboon, 19th century
Iguana, lizard and skink, 19th century
Horned, polychrotid and anole lizards, 19th century
Tegu and iguanid lizards, 19th century
Naja cobra and colubrid snake, 19th century
little koala sits on a branch among leaves
Gigantopithecus with Homo erectus
Saurosuchus and Hyperodapedon reptiles, illustration
Diabloceratops eatoni dinosaur, illustration
Uintatherium robustum mammal, illustration
Lohuecotitan dinosaurs laying eggs, illustration
Brachiosaurus dinosaur with young, illustration
Tyrannosaurus rex hunting, illustration
Scelidosaurus dinosaur, illustration
Barosaurus dinosaurs, illustration
Psittacosaurus dinosaur, illustration
Maiasaura dinosaur and nest, illustration
Toxodon mammal, illustration
Darwin on pigeon evolution, illustration
Silky anteaters, illustration
Opossums, 19th Century illustration
How the Rhinoceros got his Skin, illustration
Darwin on sexual selection in primates, 1871
Paraceratherium prehistoric mammals, illustration
Giant pandas, illustration
Prehistoric elephants fighting, 19th Century illustration
Scleromochlus reptiles, illustration
Albertosaurus dinosaur sleeping, illustration
Tarbosaurus dinosaur, illustration
Theropod dinosaur tracking a sauropod dinosaur, illustration
Mesozoic reptiles, illustration
Lark Quarry dinosaur stampede, illustration
Dinosaur fossil discovery and reconstruction, illustration
Magpie and raptor dinosaur, illustration
Teleosaurus and Hylaeosaurus reptiles, 19th century
The Elephant's Child, illustration
Toxodon prehistoric mammal fossil skull, 19th century
Toxodon prehistoric mammal fossils, 19th century
Macrauchenia prehistoric mammal fossils, 19th century
Macrauchenia prehistoric mammal fossil femurs, 19th century
Ground sloth prehistoric mammal fossil teeth, 19th century
Mylodon prehistoric mammal fossil teeth, 19th century
Prehistoric and modern mammal vertebrae, 19th century
Ground sloth prehistoric mammal fossils, 19th century
Megalonyx prehistoric mammal fossil, 19th century
Megatherium prehistoric mammal fossils, 19th century
Megatherium prehistoric mammal fossil, 19th century
Haeckel on animal and human limbs, 1874
Brazilian marmosets, 17th century
Gastornis gigantea and its prey, illustration
Australopithecus sediba female and infant, illustration
Australopithecus sediba family group, illustration
Raleigh's El Dorado Expedition, 1595
Casanova scene, 19th century
Flying horse tale from The Arabian Nights, 18th century
South American tree iguanas, 19th century
South American frogs, 19th century
Poacher fish and pigfish, 19th century
South American freshwater fish, 19th century
Clingfishes and pipefish, 19th century
South American coastal fish, 19th century
Allosaurus attacking a Stegosaurus dinosaur, illustration
Skate and other fish, 19th century