Exercise 2
Again, use the data below to order organisms and
shared apomorohies in the following table into their correct position on the
cladogram.
| Uniramia (Outgroup) |
Cephalocarida | Malacostraca | Remipedia | Maxillopoda | Branchiopoda | |
| Mandibulate | Yes | Yes | Yes | Yes | Yes | Yes |
| Nauplius larva |
No | Yes | Yes | Yes | Yes | Yes |
| 2nd Antenna biramous |
No | Yes | Yes | Yes | Yes | Yes |
| # segments in abdomen |
Many segments; body not divided into 3 regions | 11; body divided into 3 regions | 6 or 7; body divided into 3 regions | Many segments; body not divided into 3 regions | < 8; body divided into 3 regions | < 9; body divided into 3 regions |
| Carapace present |
No | No | Present but subsequently reduced | No | Present but subsequently reduced | Yes |
| Maxillipeds | No | No | Yes | No | Yes | No |