The Hoplitidae is a family of Cretaceous ammonites that lived during the middle of the period from the late Aptian to the Cenomanian. They are part of the superfamily Hoplitoidea.
Members of the Hoplitidae are typically evolute, with inner whorls exposed, although some are more involute, and are commonly stout and strongly ribbed, with pronounced tubercles.
The Hoplitidae are thought to be derived from the U Aptian -M Albian Uligella of the Desmoceratidae, or some related form and have been divided into three subfamilies.
Subtaxa Classification of Hoplitidae was revised multiple times during the last few decades. Currently, Hoplitidae contains 3 subfamilies:Amédro, F., Matrion, B., Magniez-Jannin, F., & Touch, R. (2014). La limite Albien inférieur-Albien moyen dans l’Albien type de l’Aube (France): ammonites, foraminifères, séquences. Revue de Paléobiologie, 33(1), 159-279.
Gastroplitinae Freboldiceras Arcthoplites ?Sokolovites Pseudopulchellia ?Gastrohoplites Gastroplites Irenoceras Neogastroplites ?Alopecoceras Sonneratiinae Bucaillella Sonneratia Pseudosonneratia Anahoplitoides Hemisonneratia Protohoplites Tetrahoplites Hoplitinae Otohoplites Hoplites Hoplites (Hoplites) Hoplites (Isohoplites) Anahoplites Dimorphoplites Epihoplites Epihoplites (Metaclavites) Epihoplites (Epihoplites) Semenoviceras Callihoplites Pleurohoplites Pleurohoplites (Pleurohoplites) Pleurohoplites (Arrhaphoceras) Euhoplites Hyphoplites Hyphoplites (Hyphoplites) Hyphoplites (Discohoplites)
Phylogenetic relations The Hoplitidae may have given rise to the Schloenbachiidae and seems to be in a different branch of the Hoplitoidea from earlier families included.
References
Treatise on Invertebrate Paleontology, Part L, Mollusca 4, Mesozoic Ammonoidea. R.C. Moore (ed). Geological Soc. of America and Univ Kansas Press (1957) Hoplitidae-Paleodb