| genus | group |
|---|---|
| Ambystoma | mole salamander |
| Amphimedon | demosponge |
| Aurelia | cnidarian (jellyfish) |
| Branchiostoma | lancelet (cephalochordate) |
| Capsaspora | unicellular eukaryote (closely related to animals) |
| Charnia | enigmatic Ediacaran fossil |
| Ciona | sea squirt (tunicate) |
| Epiperipatus | velvet worm |
| Hydra | cnidarian (hydrozoan) |
| Mnemiopsis | comb jelly (ctenophore) |
| Monosiga | choanoflagellate |
| Nematostella | cnidarian (sea anemones) |
| Pinctada | bivalve mollusc |
| Platynereis | marine annelid |
| Priapulus | priapulid worm |
| Saccoglossus | acorn worm |
| Strongylocentrotus | sea urchin |
| Sycon | calcareous sponge |
| Tribolium | beetle |
| Trichoplax | placozoan |