Select species:
- Eutheria (Placental mammals)
- Human (Homo sapiens) (567 genes, 268 families)
- Rhesus monkey (Macaca mulatta) (520 genes, 235 families)
- House mouse (Mus musculus) (452 genes, 224 families)
- Norway rat (Rattus norvegicus) (420 genes, 189 families)
- Guinea pig (Cavia porcellus) (402 genes, 184 families)
- Rabbit (Oryctolagus cuniculus) (391 genes, 185 families)
- Dog (Canis familiaris) (455 genes, 211 families)
- Cow (Bos taurus) (459 genes, 214 families)
- Nine-banded armadillo (Dasypus novemcinctus) (380 genes, 169 families)
- Lesser hedgehog tenrec (Echinops telfairi) (350 genes, 166 families)
- Metatheria (Marsupial mammals)
- Tasmanian devil (Sarcophilus harrisii) (465 genes, 161 families)
- Gray short-tailed opossum (Monodelphis domestica) (505 genes, 171 families)
- Monotremata
- Platypus (Ornithorhynchus anatinus) (402 genes, 149 families)
- Aves (Birds)
- Chicken (Gallus gallus) (286 genes, 136 families)
- Rock pigeon (Columba livia) (257 genes, 121 families)
- Zebra finch (Taeniopygia guttata) (257 genes, 115 families)
- Crocodylia (Alligators and Crocodiles)
- American alligator (Alligator mississippiensis) (283 genes, 113 families)
- Testudines (Turtles)
- Western painted turtle (Chrysemys picta bellii) (301 genes, 124 families)
- Squamata (Lizards and Snakes)
- Green anole lizard (Anolis carolinensis) (267 genes, 118 families)
- Burmese python (Python bivittatus) (248 genes, 96 families)
- Schlegels Japanese gecko (Gekko japonicus) (262 genes, 99 families)
- Rhynchocephalia (beak-heads)
- Tuatara (Sphenodon punctatus) (225 genes, 102 families)
- Anura (Frogs and Toads)
- African clawed frog (Xenopus laevis) (505 genes, 118 families)
- Tropical clawed frog (Xenopus tropicalis) (355 genes, 106 families)
- Gymnophiona (Apoda)
- Microcaecilia (Microcaecilia unicolor) (245 genes, 97 families)
- Actinista (Coelacanths)
- Coelacanth (Latimeria chalumnae) (232 genes, 91 families)
- Teleostei (Teleost fish)
- Pufferfish (Tetraodon nigroviridis) (287 genes, 97 families)
- Cod (Gadus morhua) (338 genes, 120 families)
- Asian swamp eel (Monopterus albus) (343 genes, 108 families)
- Zebrafish (Danio rerio) (414 genes, 113 families)
- Holostei (Gars and Bowfins)
- Spotted gar (Lepisosteus oculatus) (273 genes, 104 families)
- Chondrichthyes (Cartilaginous fish)
- Cloudy Catshark (Scyliorhinus torazame) (248 genes, 91 families)
- Australian ghostshark (Callorhinchus milii) (271 genes, 110 families)
- Cyclostomata
- Inshore hagfish (Eptatretus burgeri) (180 genes, 77 families)
- Sea Lamprey (Petromyzon marinus) (216 genes, 83 families)
- Urochordata (Sea squirts)
- Sea Squirt (Ciona intestinalis) (107 genes, 72 families)
- Cephalochordata (Amphioxus)
- Florida lancelet (Branchiostoma floridae) (127 genes, 72 families)
- European lancelet (Branchiostoma lanceolatum) (202 genes, 77 families)
- Hemichordata
- Saccoglossus (Saccoglossus kowalevskii) (78 genes, 50 families)
- Ptychodera (Ptychodera flava) (87 genes, 53 families)
- Echinodermata
- Purple sea urchin (Strongylocentrotus purpuratus) (60 genes, 44 families)
- Bat starfish (Patiria miniata) (59 genes, 40 families)
- Xenoturbella
- Xenoturbella (Xenoturbella bocki) (46 genes, 31 families)
- Hexapoda (Insects)
- Fruit fly (Drosophila melanogaster) (161 genes, 99 families)
- Fruit fly (Drosophila simulans) (159 genes, 97 families)
- Fruit fly (Drosophila yakuba) (148 genes, 88 families)
- Fruit fly (Drosophila ananassae) (159 genes, 101 families)
- Fruit fly (Drosophila mojavensis) (162 genes, 102 families)
- Yellow fever mosquito (Aedes aegypti) (118 genes, 70 families)
- Longwing butterfly (Heliconius melpomene) (130 genes, 79 families)
- Red flour beetle (Tribolium castaneum) (191 genes, 88 families)
- Cockroach (Blattella germanica) (144 genes, 86 families)
- Crustacea
- Common water flea (Daphnia pulex) (83 genes, 59 families)
- Large common water flea (Daphnia magna) (80 genes, 56 families)
- Chelicerata
- Deer tick (Ixodes scapularis) (64 genes, 52 families)
- Arizona bark scorpion (Centruroides sculpturatus) (101 genes, 44 families)
- Atlantic horseshoe crab (Limulus polyphemus) (293 genes, 55 families)
- Nematoda
- Roundworm (Caenorhabditis elegans) (145 genes, 90 families)
- Roundworm (Caenorhabditis briggsae) (186 genes, 89 families)
- Large roundworm (Ascaris suum) (96 genes, 53 families)
- Annelida
- Polychaete worm (Capitella teleta) (102 genes, 69 families)
- Common brandling worm (Eisenia fetida) (193 genes, 66 families)
- Mollusca
- Owl limpet (Lottia gigantea) (82 genes, 54 families)
- Pacific oyster (Crassostrea gigas) (137 genes, 60 families)
- Chambered Nautilus (Nautilus pompilius) (78 genes, 60 families)
- Hawaiian bobtail squid (Euprymna scolopes) (147 genes, 113 families)
- California two-spot octopus (Octopus bimaculoides) (173 genes, 136 families)
- Common octopus (Octopus vulgaris) (177 genes, 135 families)
- Brachiopoda
- Lingula (Lingula anatina) (106 genes, 51 families)
- Plathyhelminthes
- Freshwater planarian (Schmidtea mediterranea) (107 genes, 45 families)
- Rotifera
- Rotifer (Brachionus plicatilis) (47 genes, 35 families)
- Cnidaria
- Starlet sea anemone (Nematostella vectensis) (30 genes, 24 families)
- Freshwater-polyp (Hydra vulgaris) (26 genes, 23 families)
- Porifera
- Amphimedon (Amphimedon queenslandica) (8 genes, 7 families)
- Muellers freshwater sponge (Ephydatia muelleri) (7 genes, 5 families)