The genus considered to be the most basal member of the family.

It is considered to be the most basal member of the group Trionychoidae.

Despite its late appearance, it is among the most basal dromaeosaurids.

This family was found to be the most basal group of Notosuchia.

It is the most basal known member of the Parvicursorinae.

It also showed its position as the most basal of that superorder.

According to Paul, ornithomimosaurs are the most basal members of this group.

This family forms a natural clade that is the most basal to the order.

It was one of the earliest and most basal erythrosuchids.

It was one of the earliest and most basal gavialoids known.