The Past and Present Life of the Globe

abundance ages America animals appear areas arrangement aspects assume attain bear become beginning birds carboniferous causes chalk character clearly climate coal connection continuous corals creation crustaceans deposits discover distinctive earth epoch estuaries Europe evidence existing external extinct exuberant facts families fauna fishes flora force forest formations forms fossil fragments function genera genial geological gigantic globe gradually growth higher human increase indicated influences known land leaves less lignites limits living lower mammals marine means mesozoic nature never northern numerous occur ocean old red once oolite operations organic origin palæozoic pass past period physical plants pleistocene present preserved progress question races reason recent red sandstone regions remains represented reptiles seas shores Silurian species stage stones strata structure surface tertiary tion trace true turn types varied variety various vast vegetable vitality waters whole