PURE SCIENCE 
508 Reptils Birds 
I Reptils 
II Lacertilia ~~ Lizards 
12 Ophidia Snakes 
121 Nonvenomus snakes 
.126 Venomus snakes 
Chelonia, Turtles 
Crocodilia Crocodiles 
Ichthyopterygia 
Sauropterygia 
Anomodontia 
Pterosauria 
Dinosauria 
Birds Aves 
Geografic distribution 
Divide like 930-999 
Grallatores Waders 
Fulicariae 
Coot, rail, sungrebe 
Alectorides 
Seriema, sun bittern, trumpeter, kagu, crane, courlan 
Limicolae Shore birds 
Plover, snipe, sand piper, stilt, oyster catcher 
Herodiones 
"Heron, bittern, stork, ibis, spoonbill, flamingo, umbrette 
Natatores Swimmers 
Anseres Lamellirostral swimmers 
Duck, goose, swan, merganser, screamer, sheldrake 
Longipennes Long-wingd swimmers 
Jaeger, skua, gull, tern, skimmer, albatross, petrel 
Steganopodes Totipalmate swimmers 
Tropic bird, cormorant, pelican, darter, gannet, man-o'war bird 
Pygopodes . Diving birds 
Grebe, loon, auk, murre, puffin, penguin 
Cursores Ratite Runners 
Struthionidae Ostrich 
Rheidae Rhea 
Casuariidae Cassowary Dromaeidae Emu 
Apterygidae Kiwi Dinornithidae Moa 
Rasores Scratchers 
Gallinae Gallinaceus birds 
True fowl, grouse, quail, hoatzin, fesant, turkey 
.63 Columbae 
Pigeon, dodo