Plankton - Lecture 4

Question 1

Name two kinds of plankton in the Phanerozoic period

Answer 1

Acritarchs (organic walled) and zooplankton (radiolaria and graptolites)

Question 2

Describe the mid-Jurassic innovations

Answer 2

Evolution of planktonic foraminfera and coccoliths which account for 45% of worlds calcium carbonate in the oceans

Question 3

Name two kinds of extinction

Answer 3

Mass and background