Paraspadella
Paraspadella is a genus of chaetognaths in the family Spadellidae. "Paraspadella" was originally considered as "Spadella" before a revision separated that genus into three genera: "Spadella", "Paraspadella", and "Gephyrospadella", the last of which is now synonymised to "Paraspadella". The initial division was based on previous knowledge of three groups of "Spadella", in a similar manner in which "Sagitta" was divided into a family of genera. "Paraspadella" is differentiated from "Spadella" by the presence of disparate (digital) adhesive organs, present in the former to various degrees, but entirely absent in the latter.