Zenostephanus

{{Short description|Genus of molluscs (fossil)}}

{{Automatic Taxobox

| fossil_range = U Jura

| taxon = Zenostephanus

| authority = Arkell& Callomon,(1963)}}

Zenostephanus is true ammonite genus from the lower part of the Upper Jurassic of eastern England and Scotland belonging to the ammonitid family, Perisphinctidae.[http://ejurassic.ucoz.ru/forum/7-169-1#213 revised name for Xenostephanus]

Zenostephanus is revised from Xenostephanus, a preoccupied name for a new genus of toxodont notoungulate from Argentina.[https://archive.today/20130105082330/http://www3.interscience.wiley.com/journal/122305424/abstract?CRETRY=1&SRETRY=0 Zenostephanus new name] The type is Aulacostephanus ranbyensis