''Laevapetchyus'' is a genus of

ammonite Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) ...

s. In Europe, most representatives of the genus ''Laevaptychus'' occur by the end of the early Tithonian. ''Laevaptychus latus'' is common throughout the Upper Jurassic and is abundant in the Alpine-Mediterranean region. It is also recorded in southern Arabia, Tunisia, Somalia and the western North Atlantic. In Mexico, the first records of ''Aptychus latus'' (= ''Laevaptychus latus'') are provided from the Upper Jurassic of the La Caja Formation at Sierra de Catorce,

San Luis Potosí San Luis Potosí (), officially the Free and Sovereign State of San Luis Potosí ( es, Estado Libre y Soberano de San Luis Potosí), is one of the 32 states which compose the Federal Entities of Mexico. It is divided in 58 municipalities and i ...

and from the upper Kimmeridgian "Couche à ''Haploceras'' d. gr. ''Fialar''" of Sierra de Santa Rosa, Mazapil,

Zacatecas , image_map = Zacatecas in Mexico (location map scheme).svg , map_caption = State of Zacatecas within Mexico , coordinates = , coor_pinpoint = , coordinates_footnotes = , subdivision_type ...

References

{{Taxonbar, from=Q28432804 Ammonitida genera