kretさんのイラストまとめ

Fukuivenator... I drew this back when they thought it was a raptor (apparently, it's a therizinosaur now).

qrt with your faces... https://t.co/dXQbZmb5Nh

Remake of an old #speculativeevolution concept: a vermin species which has evolved to be very cute as a defense against humans.

The third in a line of three #speculativeevolution rat species. The porpoise-sized rat whale has completely adapted to life underwater. The nostrils have migrated to the top of the skull, and its incisor-beak has become larger. The rat whale's tail paddles side to side rather… https://t.co/VQnkdth2kE

The second in a line of three #speculativeevolution rat species. The rat croc spends the majority of its time underwater. Its front teeth have fused into a sharp beak.

Part of a one-off series where a lineage of future rats parallels the evolution of whales.

The first in a line of three #speculativeevolution rat species. The water rat leads a semi-aquatic lifestyle.

Part of a one-off series where a lineage of future rats parallels the evolution of whales.

@clarkjosephf Here it is: a speculative flying oviparous therapsid.

The wing membranes are supported by stiff collagen fiber rods. It is crepuscular, and primarily frugivorous.

Although this species' prominent tusks bear a superficial resemblance to Lystrosaurus, the two are not closely… https://t.co/8lXsbYgki4

@Riamus01 This small species, presumed carnivorous, is known from a single beautifully preserved skull.

Recent studies suggest bony Earth organisms had fleshy external auditory organs. Evidence for filamentous integument among this group is shoddy at best, and remains controversial.

A Nildoror, one of the sapient alien species from Robert Silverberg's excellent sci-fi book Downward to the Earth. Described as large green elephant-like creatures with three tusks, a fingered trunk, and a row of spines running down their backs. #speculativebiology #alien