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Albertosaurus sarcophagus

Albertosaurus sarcophagus

Cretaceous Late Carnivore

Alca ausonia

Alca ausonia

Carnivore

Alca carolinensis

Alca carolinensis

Carnivore

Alca olsoni

Alca olsoni

Carnivore

Aldiomedes angustirostris

Aldiomedes angustirostris

Carnivore

Alectrosaurus olseni

Alectrosaurus olseni

Cretaceous Late Carnivore

Herrerasaurus ischigualastensis

Herrerasaurus ischigualastensis

Zaraapelta nomadis

Zaraapelta nomadis

Cretaceous Late Herbivore

Segisaurus

Segisaurus

Jurassic Early Carnivore

Microraptor

Microraptor gui

Cretaceous Early Carnivore

Hesperornis regalis

Hesperornis regalis

Cretaceous Late Piscivore

Plateosaurus elizae

Plateosaurus elizae

Triassic Late Herbivore

Quiscalus

Quiscalus

Herbivore

Grabauornis lingyuanensis

Grabauornis lingyuanensis

Cretaceous Early Carnivore

Palaeotis weigelti

Palaeotis weigelti

Herbivore

Grallator cursorius

Grallator cursorius

Triassic Late Carnivore

Lonchodytes estesi

Lonchodytes estesi

Cretaceous Late Carnivore

Microraptor gui

Microraptor gui

Cretaceous Early Carnivore

Gavia brodkorbi

Gavia brodkorbi

Carnivore

Argoides redfieldii

Argoides redfieldii

Jurassic Early

Zby atlanticus

Zby atlanticus

Jurassic Late Herbivore

Aristosuchus pusillus

Aristosuchus pusillus

Cretaceous Early Carnivore

Anchisauripus

Anchisauripus

Jurassic Early Carnivore

Anas talarae

Anas talarae

Herbivore

Chionis albus

Chionis albus

Carnivore

Arriagadoolithus patagoniensis

Arriagadoolithus patagoniensis

Cretaceous Late Carnivore

Anchisaurus polyzelus

Anchisaurus polyzelus

Jurassic Early

Andalgalornis steulleti

Andalgalornis steulleti

Carnivore

Artamidae

Artamidae

Carnivore

Anhinga subvolans

Anhinga subvolans

Carnivore

Arundinicola leucocephala

Arundinicola leucocephala

Herbivore

Ankylosauria

Ankylosauria

Cretaceous Early Herbivore

Asiahesperornis

Asiahesperornis

Cretaceous Late Carnivore

Zebrilus undulatus

Zebrilus undulatus

Carnivore

Ankylosaurus magniventris

Ankylosaurus magniventris

Cretaceous Late Herbivore

Anomalopteryx didiformis

Anomalopteryx didiformis

Carnivore

Platydyptes novaezealandiae

Platydyptes novaezealandiae

Carnivore

Aphelocoma insularis

Aphelocoma insularis

Omnivore

Aphrodroma brevirostris

Aphrodroma brevirostris

Carnivore

Apodidae

Apodidae

Insectivore

Anser pressus

Anser pressus

Anomoepus scambus

Anomoepus scambus

Jurassic Early Herbivore

Appalachiosaurus montgomeriensis

Appalachiosaurus montgomeriensis

Cretaceous Late Carnivore

Aprosdokitos mikrotero

Aprosdokitos mikrotero

Carnivore

Aptenodytes ridgeni

Aptenodytes ridgeni

Carnivore

Antetonitrus ingenipes

Antetonitrus ingenipes

Jurassic Early Herbivore

Apatosaurus ajax

Apatosaurus ajax

Jurassic Late Herbivore

Aptornis defossor

Aptornis defossor

Carnivore