Kossmaticeratidae
Kossmaticeratidae is an extinct ammonoid family belonging to the order Ammonitida.
Subfamilies and genera
Kossmaticeratidae includes two subfamilies and eight genera:- Kossmaticeratinae Spath, 1922
- * Grossouvrites Kilian and Reboul, 1909
- * Gunnarites Kilian and Reboul, 1909
- * Kossmaticeras de Grossouvre, 1901
- * Maorites Marshall, 1926
- * Pseudokossmaticeras Spath, 1922
- Marshallitinae Matsumoto, 1955
- * Eomarshallites Medina and Rinaldi, 1986
- * Marshallites Matsumoto, 1955
- * Yokoyamaoceras Wright and Matsumoto, 1954