Lystrosaurus went extinct at the end of triassic in the triassic-jurrasic extintion event at 200 million years ago during the break up of the supercontinent pangea with the alongside with the armoured archosaurs and some achosaurs and the dinosaurs take over the world in the early jurrasic.
A Lystrosaurus was a tetrapod that lived during the late Permian period. The Lystrosaurus is a distant relative of today's mammals.
huayangosaurus went extinct in the K/T Mass Extinction in 65 million years ago with all Dinosaurs Went Extinct
when if the plants went extinct of deforesation will be no life on earth
They are both extinct animals. The dodo went extinct in the late 1600s. The moa went extinct in about 1400.
it went extinct in 19 b.c
If they went extinct the whole food chain would be out of balance.
Cro-Magnon never went extinct. They evolved into modern Europeans. Neanderthals went extinct.
lysttrosaurus was a medium sized reptile with two short tusks, it is in a class called the dyconadonts which became extinct at the end of the triassic period, and may be an adept swimmer. it is a herbivore, and it's fossils are found even in remote places like antartica.
the dimetrodon went extinct in the Permian Mass Extiction Event in 250 million years ago
the jurassic
yes there are types of bison that went extinct.
Circumcision followed by castration. They had a big drive to stop criminals reproducing.