Okla. Stat. tit. 74, § 74-3315.2: Potential areas for inclusion in State Register -

Characteristics.

Any potential natural area recommended for inclusion in the

State Register shall possess one or more of the following

characteristics:

1. Rare, threatened, or endangered plant or animal species

habitat;

2. Outstanding plant community type which is representative of

the natural diversity of this state;

3. Outstanding geological element which is representative of

the geological history or processes of this state;

4. Outstanding aquatic elements which are representative of the

aquatic diversity of this state; or

5. Unusual natural features, such as vegetation types, virgin

stands, or other unique biological or ecological phenomena.