In addition, we will examine bizarre fossil organisms that bear witness to the famous 'Cambrian explosion,' which occurred over 540 million years ago.
(we; will examine; bizarre fossil organisms that bear witness) (bizarre fossil organisms; bear; witness) (the famous 'Cambrian explosion; occurred; T:over 540 million years ago)
we bizarre fossil organisms the famous 'Cambrian explosion
will examine bear occurred
bizarre fossil organisms that bear witness
witness
T:over 540 million years ago