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The Ordovician period is the second period in the [[Paleozoic]] era. It started approximately 500 million years ago after the end of the [[Cambrian]]. Most of the phyla which are living today existed at the beginning of the Ordovician period. By the end of the Ordovician period, the first land plants, bryophytes, evolved and began to colonize the land. The Ordovician also saw the [[evolution]] of [[fish]]. The Ordovician was preceded by the [[Cambrian]] and succeeded by the [[Silurian]].

The Ordovician period is a theorized second period in the theorized [[Paleozoic]] era. It is posited that it started approximately 500 million years ago after the end of the theorized [[Cambrian]] era. Most of the phyla which are living today is posited to have existed at the beginning of the Ordovician period by those who assert that the earth is billions of years old. [[Theory of evolution|Evolutionary]] scientists assert by the end of the Ordovician period, the first land plants, bryophytes, evolved and began to colonize the land. The Ordovician also is claimed to have seen the [[evolution]] of [[fish]]. The Ordovician is posited to have preceded by the [[Cambrian]] era  and succeeded by the [[Silurian]] era.

== Young earth creation scientists view ==

== Young earth creation scientists view ==