Territonidae
Territonidae is a family of extinct marine snails. These gastropods lived during the Mesozoic Era, specifically from the Jurassic period to the Cretaceous period. They are characterized by their generally conical shells, which often exhibit distinctive ornamentation. The shell aperture, the opening of the shell, typically displays a specific shape and internal structure that helps in classification. Fossilized remains of Territonidae are found in marine sedimentary rocks from various locations worldwide, indicating a widespread distribution during their existence.
The taxonomic placement of Territonidae within the larger classification of gastropods has been subject to revision