Formula radiometric dating
— Richard Dawkins, Until recently, vertebrates have been known from rocks no older than the Middle Ordovician (about 450 million years ago) (1, 2).
I endeavoured to show, that the life of each species depends in a more important manner on the presence of other already defined organic forms, than on climate; and, therefore, that the really governing conditions of life do not graduate away quite insensibly like heat or moisture.These contingencies will concur only rarely, and after enormously long intervals.Whilst the bed of the sea is stationary or is rising, or when very little sediment is being deposited, there will be blanks in our geological history.Before we come to the sort of sudden bursts that they [Eldredge and Gould] had in mind, there are some conceivable meanings of `sudden bursts' that they most definitely did not have in mind.
These must be cleared out of the way because they have been the subject of serious misunderstandings.Centered headers, below, are his categories; the rest are mine. Changes in atmospheric partial pressures of carbon dioxide produce corresponding changes in carbon dioxide solubility. Sloss, [T]his quote only demonstrates that, sometimes, under the right conditions, limestones can form by inorganic processes.