Extent
The fauna of the middle Cambrian has a cosmopolitan range. All assemblages preserving soft-part anatomy have a very similar fauna, even though they span almost every continent. The wide distribution has been attributed to the advent of pelagic larvae.
Read more about this topic: Burgess Shale Type Fauna
Famous quotes containing the word extent:
“We are thus able to distinguish thinking as the function which is to a large extent linguistic.”
—Benjamin Lee Whorf (1897–1934)
“We now talk of our killed and wounded. There is however a very happy feeling. Those who escape regret of course the loss of comrades and friends, but their own escape and safety to some extent modifies their feelings.”
—Rutherford Birchard Hayes (1822–1893)
“I don’t think that a leader can control to any great extent his destiny. Very seldom can he step in and change the situation if the forces of history are running in another direction.”
—Richard M. Nixon (1913–1995)