F.A. Quenstedt's trinominal nomenclature (1845-1888): a proposal to stabilize the usage of the third names of ammonites and to place 34 important Quenstedt names of ammonites on the Official List of Specific Names in Zoology (Cephalopoda, Ammonoidea)

摘要

The purpose of this application is to stabilize the usage of the third names of a number of ammonites established by F.A. Quenstedt (1845-1888) and to place 34 of his species-group names on the Official List. The problem has arisen from uncertainty as to whether Quenstedt's third names should be treated as subspecific, and therefore available, or as infrasubspecific and therefore unavailable under the Code. It is proposed that the Commission should rule that all Quenstedt's third names under the genus Ammonites are subspecific in rank and are therefore available names in the species group. It is also proposed that the Commission should rule that seven such third names that are junior homonyms, but are type species of genera or indices of standard chronostratigraphic Zones or Subzones, are not invalid by reason of being junior homonyms. It is proposed that these seven names, together with 27 other Quenstedt third names that are in current use as important zonal or subzonal index fossils or as type species of ammonite genera, are placed on the Official List of Specific Names in Zoology.