"Suborder"@en . . "Superfamily"@en . . "M Jurassic"@en . . . . . "Perisphinctaceae"@en . . "Perisphinctaceae"@en . "The Perisphinctaceae, Perisphinctoidea in newer references, is a superfamily of ammonites that unites a dozen (12) or so phylogenetically related families, namely the: Aspidoceratidae, Aulacostephanidae, Dorsoplanitidae, Himalayitidae, Holcodiscidae, Morphoceratidae, Olcostephaidae, Parkinsoniidae, Perisphinctidae, Polyptychitidae, Reineckeiidae, and Tulitidae. The actual families considered included vary somewhat from reference to reference."@en . . . . "The Perisphinctaceae, Perisphinctoidea in newer references, is a superfamily of ammonites that unites a dozen (12) or so phylogenetically related families, namely the: Aspidoceratidae, Aulacostephanidae, Dorsoplanitidae, Himalayitidae, Holcodiscidae, Morphoceratidae, Olcostephaidae, Parkinsoniidae, Perisphinctidae, Polyptychitidae, Reineckeiidae, and Tulitidae. The actual families considered included vary somewhat from reference to reference."@en . . "Perisphinctaceae"@en . "Order"@en . .