Cantú-Chapa A. (2009) Some perisphinctid ammonites of the Tithonian (Jurassic) from Eastern Mexico – systematic considerations // Petroquimex, On line, Agosto, P.2-20. Pdf: http://rogov.zwz.ru/cantuchapa,2009_perisphinctids_tithon.pdf
The perisphinctid ammonites Mazatepites arredondense and Volanoceras chignahuapense were proposed as new taxa in the Upper Jurassic (Tithonian), from outcrops of the Pimienta Formation in the Mazatepec and Chignahuapan villages, eastern Mexico. Interpretation of these taxa generated controversy about their systematic classification and stratigraphic position. For this reason, these taxa and a specimen of Kossmatia victoris from the same bed that Mazatepites are here revised. A new family and three new subfamilies are herein proposed: Nebroditidae n. fam., Mazatepitinae n. subfam., Cuetzalaninae n. subfam., and Chignahuapinae n. subfam. Chignahuapites n. gen. and Cuetzalanites tonatiuhoides n. gen. and sp., and Chignahuapites fosyi n. gen. and sp. Are also proposed. The penultimate taxa has the same age and geographic provenance of Mazatepites. Last taxa is from Hungary
