The fossil record of Cnidaria is
A)about the same as for other primitive animals,beginning in the Cambrian.
B)relatively sparse since their bodies are so soft that they leave no skeleton to fossilize.
C)one of the longest records,with fossils going back over 700 million years.
D)sporadic since the marine environment is not a good substrate to preserve fossils.
E)very recent since most of them have symbiotic relationships with advanced animals such as clown fish.

Question

Quizplus · Accepted Answer

Cnidarians have one of the longest fossil records, with evidence of their existence dating back over 700 million years, due to their early appearance in Earth's history.

The Fossil Record of Cnidaria Is