Consider the following sentence:
The fossil consists of a complete skull of an archaeocyte, an extinct group of ancestors of modern cetaceans.
Does it mean "the fossil consists of a complete skull; the fossil consists of an archaeocyte; and the fossil consists of an extinct group of ancestors of modern cetaceans"?
What does the sentence mean and how should I understand "archaeocyte" here?
In the Merriam-Webster dictionary, "archaeo-" means "ancient" and "-cyte" means "cell". It seems that it doesn't make sense if "archaeocyte" means "an ancient cell" in this sentence.
The sentence is from an article in ETS's The Official Guide to the TOEFL Test(third edition).