"yo, did you hear what dan said to that pregnant woman at the darwin party?  he kept repeating, "i'm going to have a cambrian explosion all over your face"
"a particularly significant episode in evolutionary history, characterized by the "sudden" appearance of many of today's extant fauna
""yo, did you hear what dan said to that pregnant woman at the darwin party?  he kept repeating, "i'm going to have a cambrian explosion all over your face"" What is the definition of "cambrian explosion"?