1. The Claspers are formed from the endites, however, the Claspers are formed from different endites than in the Laevicaudata

2. 33, 8 Apodous: Appendages: 49 - 52: Notable characters: Carapace more rounded than typical in Lepidurus, endite 6 of the first thoracic appendage is developed into a claw like structure (it is reduced to a small lobe in all other notostracans), second maxilla present: Reproduction

3. The crown group Branchiopoda is supported/diagnosed by a set of synapomorphies relating to limb morphology of both larvae and adults, including, among others, a similar naupliar swimming/feeding apparatus, a similar development of trunk limbs, and a similar morphology of adult trunk limbs with six endites (number reduced later) and an unsegmented endopod.