Family =Compsognathidae=. _Compsognathus._
Family =Ceratopsidae=. _Polyonax_ (_Ceratops_).
Family =Camptosauridae=. _Hypsilophodon._
Family =Phytosauridae=. _Phytosaurus_ (_Belodon_).
Family =Teleosauridae=. _Teleosaurus._ _Metriorhynchus._
Family =Alligatoridae=. Alligator. Caiman. Jacare.
Family =Garialidae=. Garialis (Gavialis).
Family =Pterodactylidae=. _Pterodactylus._
Family =Rhamphorhynchidae=. _Rhamphorhynchus._
[15] A. Smith Woodward, _Catalogue of Fossil Fishes in the British Museum_, Part II., Introduction, p. xii.
[16] This classification of reptiles is mainly based on that of Lydekker (_Catalogue of Fossil Reptiles in the British Museum_) but in some respects that of von Zittel has been followed.
Subclass (I). ARCHAEORNITHES. _Archaeopteryx._
Group =Megistanes=. Casuarius--cassowary. Dromaeus--emeu.
Group =Rheornithes=. Rhea--American ostrich.
Group =Struthiornithes=. Struthio--ostrich.
Group =Ichthyornithiformes=. _Ichthyornis._ _Apatornis._ _Odontopteryx._
Group =Colymbiformes=. Subgroup Colymbi--divers.
Group =Sphenisciformes=. Subgroup Sphenisci--penguins.
Subgroup Steganopodes. Sula--gannet. Pelicanus--pelican. Phaëthon--frigate bird. Phalacrocorax--cormorant.
Subgroup Ciconiae. Leptoptilus--adjutant. Ciconia--white stork.
Subgroup Palamedeae. Palamedea } } screamers. Chauna }
Subgroup Anseres. Anas--wild duck. Anser--goose. Plectropterus--spur-winged goose. Cygnus--swan. Mergus--merganser.
Subgroup Cathartae. Cathartes--American vulture.
Subgroup Accipitres. Falco--falcon. Vultur--vulture. Harpagus. Gypogeranus--secretary bird.
Subgroup Galli. Gallus--fowl. Pavo--peacock.
Subgroup Opisthocomi. Opisthocomus--hoatzin.
Subgroup Limicolae. Charadriidae--plovers. Parra--jacana.
Subgroup Lari. Laridae--gulls. Alcidae--auks.
Subgroup Pteroclidae. Pterocles--sandgrouse.
Subgroup Columbidae. Columbae--pigeons. _Didus_--dodo. _Pezophaps_--solitaire.
Subgroup Psittaci. Stringops--owl-parrot.
Subgroup Coraciae. Coracias--roller. Buceros--hornbill. Upupa--hoopoe.
Subgroup Cypseli. Cypselidae--swifts. Trochilidae--humming-birds.
Subgroup Pici. Rhamphastos--toucan. Picus--woodpecker.
Group =Passeriformes=. Crows, finches, larks, warblers, and many others.
Subclass (I). ORNITHODELPHIA or PROTOTHERIA.