| Named By: | J. Mawson & A. S. Woodward in 1907 |
| Time Period: | Late Cretaceous, 110-95 Ma |
| Location: | Fossils are mostly known from across South America and North Africa. Individual countries known to include Algeria, Brazil and Morocco |
| Size: | Up to 4 meters long, though isolated fossils suggest that rare individuals may have grown slightly larger than this |
| Diet: | Carnivore |
| Fossil(s): | Numerous specimens ranging from partial remains to a few almost complete individuals. Fossils of the skull bones seem to be most common |
| Classification: | | Chordata | Sarcopterygii | Actinistia | Coelacanthiformes | Mawsoniidae | |
Mawsonia is an extinct genus of prehistoric coelacanth fish, and the largest of this group, up to several meters long. It lived during the Cretaceous period (Albian and Cenomanian stages, about 99 to 112 million years ago). Fossils have been found in Africa and South America. Mawsonia was first described by British palaeontologist Arthur Smith Woodward in 1907.