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Some extinct flightless birds.
1. Gastornis parisiensis
2. Phorusrhacos longissimus
3. Dromornis autralis
4. Kelenken guillermoi
Some extinct arthropods from the clade Radiodonta, which thrived during the Cambrian period.
(Credit: Renato de Carvalho Ferreira)
Palaeophonus caledonicus is an ancient arthropod from the upper Paleozoic.
(Credit: Satoshi Kawasaki)
Macroeuphractus outesi is the only known carnivorous armadillo & also the only carnivore from the group of mammals known as xenarthrans (sloths, armadillos, anteaters). They weighed up to 100 kg!
(Credit: zimices)
Gobipteryx lived 75 million years ago in the Late Cretaceous. It had a wingspan of 30 cm.
Palaeoisopus problematicus is an extinct species of sea spider from the Devonian period. It measured 40 cm in diameter.
(Credit: Satoshi Kawasaki)
Dunkleosteus was one of the largest armoured jawfish, reaching 10 metres in length & weighing 3.6 tons!
(Credit: Alain Benet)
Belantsea is an extinct cartilaginous fish that lived about 350 million years ago during the Lower Carboniferous. They had a beak-shaped mouth which allowed them to graze corals.
(Credit: Melissa Frankford)
Yi qi is a dinosaur that evolved flight seperately from birds (& is unrelated to pterosaurs), with both feathers & bat-like wings.
(Credit: Emily Willoughby)
Scaphognathus crassirostris was a small pterosaur from Late Jurassic Germany. It had a wingspan of just 90 cm!
(Credit: @SerpenIllus)