Erycitidae

Erycitidae is a family of Lower and Middle Jurassic ammonites included in the Hildoceratoidea. The hammatoceratid subfamily Erycitinae is equivalent. Genera include Erycites (type) and Abbasites.

Erycitidae Temporal range: Early - Middle Jurassic
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Superfamily:	†Hildoceratoidea
Family:	†Erycitidae Spath, 1928
Genera
Praerycites Venturi, 1981 Cagliceras Rulleau & Elmi, 2001 Erycites Gemmellaro, 1886 Abbasites Buckman, 1921 Abbasitoides Géczy, 1966 Haplopleuroceras Buckman, 1892 Malladaites Linares & Sandoval, 1986 Spinammatoceras Schindewolf, 1964

Description

Erycitids are generally evolute with all whorls showing and are strongly ribbed with ribs branching on the outer part of the flanks and crossing over the outer rim, or venter.

Classification

In older taxonomies, e.g. W.J. Arkell et al., 1964 and D.T. Donovan et al., 1981, the Hammatoceratidae, which then included erycitid genera, was part of the Hammatoceratoidea. More recently the Erycitidae was reassigned to the Hammatoceratoidea which also includes the Hammatoceratidae, Graphoceratidae and Sonniniidae removed from the Hildoceratoidea, left with only the Hildoceratidae and its included subfamilies.

References

• W.J. Arkell et al., 1957. Treatise on Invertebrate Paleontology Part L. Curt Tychert & R.C Moore (eds)
• D.T. Donovan et al., 1981. Classification of the Jurassic Ammonitina. The Ammonoidea. Systematics Association Special Volume no 18.
• subfamily Erycitinae Spath 1928