0 from or referring to the period of time between about 290 and 250 million years ago, in which large reptiles and amphibians appeared, and that ended with most species on earth becoming extinct (= dying out completely): --
1 the period of time between about 290 and 250 million years ago, in which large reptiles and amphibians appeared, and that ended with most species on earth becoming extinct (= dying out completely): --
The great mass extinction of the late Permian almost ended animal life because of high temperatures.
The cores date from the end of the Permian but were identified as volcanic.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Vi kan slutföra det steg för steg hur lång vägen än är och den kan inte slutföras hur kort vägen än är om du inte ens markerar ditt fotavtryck.