That table is in millions of years.............flowering plants were not always here either.......

Approximate first appearance of new types of organism

Organism	Time zone	approx date
Grasses	Oligocene	30 Ma
Bees	Cretaceous	100 Ma
Flowering plants	Cretaceous	135 Ma
Bird-type dinosaurs	Late Jurassic	150 Ma
Mammals	Triassic	220 Ma
Dinosaurs	Triassic	228 Ma
Ferns	Carboniferous	300 Ma
Conifers	Carboniferous	300 Ma
Reptiles	Carboniferous	310 Ma
Land vertebrates	Devonian	380 Ma
Insects	Devonian	400 Ma
Vertebrates with jaws	Devonian	410 Ma
Land plants, Fungi	Silurian	450 Ma
Jawless vertebrates	Ordovician	470 Ma
Crustaceans	Cambrian	530 Ma
Molluscs	Cambrian	530 Ma
Worms	Cambrian	540 Ma
Echinoderms (starfish etc), Sponges and Coelenterates (jellyfish etc)	Cambrian	540 Ma
Unicellular animals	Neoproterozoic	700 Ma
Algae	Palaeoproterozoic	2,100 Ma
Bacteria	Palaeoarchaen	3,600 Ma