California Code, Penal Code - PEN § 653p

It is unlawful to possess with the intent to sell, or to sell, within the state, the dead body, or any part or product thereof, of any species or subspecies of any fish, bird, mammal, amphibian, reptile, mollusk, invertebrate, or plant, the importation of which is illegal under the Federal Endangered Species Act of 1973 (Title 16, United States Code Sec. 1531 et seq.) and subsequent amendments,  1 or under the Marine Mammal Protection Act of 1972 (Title 16, United States Code Sec. 1361 et seq.),  2 or which is listed in the Federal Register by the Secretary of the Interior pursuant to the above acts. The violation of any federal regulations adopted pursuant to the above acts shall also be deemed a violation of this section and shall be prosecuted by the appropriate state or local officials.