The Latimeriidae are thought to be the sister group to the Mawsoniidae, an extinct family of coelacanths that survived until the Late Cretaceous, inhabited both freshwater and marine habitats, and contained some very large species. Together, both comprise the suborder Latimerioidei.
Latimeriidae are considered to be the closest relatives of Mawsoniidae, an extinct family of coelacanths that lived until the Late Cretaceous period, inhabiting both freshwater and marine environments, and featuring some large species. Together, they form the suborder Latimerioidei.