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In terms of Darwinian theory, the Cambrian Period is very early for the high level of biological complexity it exhibits. Darwinists claim that the complex structures possessed by living things are acquired gradually, over long periods of time. Therefore, species must have possessed rudimentary, primitive characteristics at the start of their supposed evolutionary histories and acquired more complex features only at the end of a very lengthy evolutionary process.
In fact, however, the history of animals presents the exactly opposite picture. The first animals shared the same basic body structures as those living today; and the same complex organs such as eyes, antennae, limbs, mouths and guts. Therefore, complexity is a characteristic that came early in animal history, rather than late. To be more accurate, it existed right from the start.
This, no doubt, is a great puzzle for evolutionists. The evolutionist researchers Marshall Kay and Edwin H. Colbert state that this state of affairs is highly baffling:
The introduction of a variety of organisms in the early Cambrian, including such complex forms of the arthropods as the trilobites, is surprising . . . The introduction of abundant organisms in the record would not be so surprising if they were simple. Why should such complex organic forms be in rocks about six hundred million years old and be absent or unrecognized in the records of the preceding two billion years? . . . If there has been evolution of life, the absence of the requisite fossils in the rocks older than the Cambrian is puzzling. 92
By hiding behind the concept of a “puzzle,” these evolutionist researchers are trying to gloss over that all these systems emerged suddenly, hundreds of millions of years ago—a fact that is enough to completely repudiate Darwinism. To show why this early complexity has such a devastating effect on Darwinism, it will be useful to compare some examples from the Cambrian ecosystems with pre-Cambrian complexity—and to examine the trilobite, one of the early complex life forms, and the perfect and highly sophisticated structure of its eye.