Phanerozoic of Pangaea into Laurasia and Gondwana in an extinction known as the Jurassic-Cretaceous extinction. Sea levels rose, destroying fern prairies and creating shallows. Ichthyosaurs became extinct whereas sauropods, as a whole, did not; in fact, some species, like "Titanosaurus", lived until the K-T extinction. The increase in sea-levels opened up the Atlantic sea way which would continue to get larger over time. The divided world would give opportunity for the diversification of new dinosaurs. The Cretaceous is the longest period in the Mesozoic, spans from 145 million to 66 million years ago, and is divided into two epochs: Early Cretaceous,
Million Years Ago (song) of my youth"". Musically, the song is an acoustic tune accompanied only by guitar. "Million Years Ago" received positive reviews from critics, with many comparing it to the music of Madonna. The song charted in Australia, Belgium, Canada, France, Finland, Germany, Hungary, Ireland, Spain, the United Kingdom and the United States. Adele performed the song during "Adele at the BBC" and on "Today". "Million Years Ago" is an acoustic tune accompanied only by guitar, finds Adele pining "for the normality of her not-so-distant childhood. Entwined with Middle Eastern twists of background hums that suggest Madonna's 'Frozen'". The song's lyrics touch