Cambrian explosion is a rapid set of evolutionary changes occurred during Cambrian Period of Paleozoic Era which is about 540 ma. This event creates all the major body plans (phyla) of modern animals.
- Burguess shale (3 คะแนน)
Burguess shale is a sedimentary rock bearing fossil fauna resulted from rapid evolutionary event called Cambrian explosion. This shale was discovered in Canada and fossil animals were call Burguess animals. Animal of the phylum Arthropoda are well known such as Anomalocaris and Opabinia.