The Famous Cambrian-Era Fossil Deposit Known as the Burgess Shale

Multiple Choice

The famous Cambrian-era fossil deposit known as the Burgess Shale is now estimated to contain fossils of how many animal phyla?

A) None―animals had not appeared at the time.
B) just two or three anatomically simple animal phyla
C) about the same number as those alive today
D) two or three times as many as alive today
E) about half as many as are alive today