Alternative spelling: Haplocerataceae
Parent taxon: Ammonitina according to G. M. El Qot 2018
See also Arkadiev et al. 2000, Baudouin et al. 2011, Förster 1975, Henderson 1990, Kennedy and Cobban 1990, Klinger and Kennedy 1990, Lukeneder 2004, Parent 2006, Pavia 2007, Reboulet 1996, Salazar and Stinnesbeck 2016, Vasicek 2002, Verma and Westermann 1973 and Wright et al. 1996
Sister taxa: Acanthoceratoidea, Aspidoceratoidea, Deshayesitoidea, Desmoceratoidea, Engonoceratoidea, Eoderoceratoidea, Hammatoceratoidea, Hildoceratoidea, Hoplitoidea, Lytoceratoidea, Oppeliaceae, Perisphinctaceae, Perisphinctoidea, Psiloceratoidea, Pulchelliaceae, Sphaeroceratoidea, Spiroceratoidea, Stephanoceratoidea, Hamitaceae, Nannolytoceratidae, Crioceratitaceae, Protetragonitidae, Tetragonitoidea
Subtaxa: Binneyitidae Haploceratidae Hebetoxyitidae Lissoceratidae Oppeliidae Strigoceratidae Tropitoides
Ecology: fast-moving nektonic carnivore