Conciliterga

Conciliterga is an extinct order of artiopod arthropods, exclusively known from the Middle Cambrian.

These members, which formerly comprised the order Helmetiida (which currently only contains Helmetia, Rhombicalvaria and Kuamaia),[3] also have various other characteristics like a lack of axial region, rostral and pararostral plates on the head, and compound eyes near the rostral plate.

In addition, they have essentially uniform biramous limbs running down the body with coarse endopods, alongside a pair of antennae.

[3] This clade is characterised by wholly fused tergites (although Skioldia still shows traces of their outlines, and so is likely more basal), alongside more ventral eyes.

Haifengella, while appearing very helmetiid-like, has been recovered as the basalmost concilitergan,[4] suggesting the Tegopelte-like clade is especially derived.

Holotype of Helmetia expansa