The subfamily Dactylioceratinae comprises early Jurassic ammonite genera that lived during Upper Pliensbachian to Upper Toarcian stage.

[1] While ribs can be single, they are mostly bifurcating at ventrolateral edge and in some genera, even fibulation (primary ribs are joining at ventrolateral tubercules) can exist.

Tubercules might also be present at ventrolateral edge, but not in all species.

[1][2] Some scholars consider Nodicoeloceratinae as valid taxon and not as synonym of Dactylioceratinae.

On the other hand, these scientists increase number of dactylioceratine genera by considering Microdactylites and Mucrodactylites as valid.