048-3 Wyo. Code R. § 3-1
(a) For births which occur in a health care facility, the person in charge or that person's representative shall secure all necessary information and signatures on the certificate.
(b) For births which occur either in a health care facility or en route to a health care facility, the physician in attendance shall certify the facts of birth and provide the medical information required by the certificate within seven (7) days after birth. If the attendant has not signed the certificate within seven (7) days of the date of the birth, the person in charge of the institution or a designated representative shall complete and sign the certificate.
(c) When a birth occurs outside a health care facility, the certificate shall be prepared and filed by one of the following in the indicated order of priority:
(d) The informant, preferably the mother (or the father, or another adult having personal knowledge of the facts concerning the birth) is responsible for providing the facts and signing the hospital worksheet to certify that the information is correct.
(e) All certificates of birth shall be filed with the local registrar within ten (10) days.
(f) If the birth certificate is filed after ten (10) days, but within one (1) year from the date of birth, the State Registrar of Vital Records may require documentary evidence supporting the facts of birth. This evidence may include evidence of the pregnancy, evidence that the infant was born alive, and evidence that the mother was present in the state on the date of birth.
048-3 Wyo. Code R. § 3-1