All deaths registered one (1) year or more after the date of death shall be registered on the standard certificate of death in the following manner:
(a) If the attending physician or the coroner at the time of death and the funeral director or person who acted as such are available, they shall complete and sign the death certificate. The certificate must be accompanied by affidavits from them stating that the information it contains is based on records kept in their files.
(b) In the absence of the attending physician or coroner or the funeral director or person who acted as such, the certificate may be filed by the next of kin of the deceased and shall be accompanied by:
(c) The State Registrar may require additional documentary evidence to prove the facts of death.
(d) The face of the certificate shall be marked "Delayed" and show the date of the delayed registration.
(e) A summary statement of the evidence submitted in support of the delayed registration shall be included on the certificate.
048-11 Wyo. Code R. § 11-2