Okla. Stat. tit. 21, § 5
A felony is a crime which is, or may be, punishable with death, or by imprisonment in the penitentiary.
R.L. 1910, § 2086; Amended by Laws 1997, HB 1213, c. 133, § 11 (effective date amended to July 1, 1999, by Laws 1998, 1st Extr. Sess., HB 1002, c. 2, §§ 23-26, emerg. eff. June 19, 1998); Amended by Laws 1999, 1st Extr. Sess., HB 1009, c. 5, § 2, emerg. eff. July 1, 1999 (superseded document available).