[1] Even after the island was owned again by the provincial government in 1974, it took another decade to put a working municipal organization in place.

It is recognized for its exceptional fossil assemblage representing the first global mass extinction of animal life on Earth.

[5] Located within protected areas free from any industrial activity, the site is endowed with exceptionally well-preserved, abundant and diverse fossil fauna, this Anticosti fauna represents the first mass extinction of animal life on a global scale, 447 – 437 million years ago, at the end of the Ordovician period.

Services available in Port-Menier include general and grocery stores, gas station, banking, restaurant, and lodging.

List of former mayors:[13] Anticosti Island is bisected by the 63rd meridian west, and as a result, the eastern part of the municipality is officially within the AST legislated time zone boundary.