Bothriolepis from Escuminac Bay, Quebec;
courtesy of the Canadian Museum of Nature.
Photo by Annetta Markussen-Brown
|The world's best-preserved placoderms come from Australia
such as the Gogo and Christmas Creek Formations. The Gogo Formation represents
the quiet deeper waters away from high-energy reef fronts. The great diversity
of fishes found in these deposits are excellently preserved because of
the lack of later geological activity that kept the region free of large
crustal movements which usually deform and compress fossils of this age.
Placoderm fossils are also notably found in the Old Red Sandstone outcrops
In Canada placoderm fossils have been found in marine deposits of the Escuminac Formation of Miguasha, Quebec.