Palaeoctopus is an extinct genus of octopuses that lived during the Late Cretaceous.

Calais newboldi was named by Henry B. Woodward in 1896 for a nearly-complete specimen from the Sahel Alma lagerstätte of Lebanon.

[4] Beloteuthis libanotica was named by Adolf Naef in 1922 for a supposed teudopsid gladius from Sahel Alma.

[7] A second species, P. pelagicus, was named by Dirk Fuchs and colleagues in 2008 for an alleged gladius vestige from the Vallecillo lagerstätte of Mexico.

[8] It was subsequently revealed to be a gular plate from a coelacanth, possibly a juvenile Megalocoelacanthus.