or# Choristoder^aGckpe Glint 
or. Rhynchocephalia Gilnther 
or. ParasuoMa Huxley • 
so. AStosauria Hich.& Lydek 
so. Phytosauria Baur 
or. Ichthyosauria Blainyille 
or. Grocodilia Wagler 
so. Mesosuchia Huxley 
so. lihisuchia Huxley 
so. Thalattosuchia 
superorder-BIHOSAURIA Owen 
or. Theropoda Marsh 
so. Megalosauria 
so. Symphypoda Cope 
or. Opisi^hocoelia Owen 
or. Orthopoda Cope 
superorder-SQUAIylATA Oppel 
or. Lacertilia Owen 
or. Mosasauria 
or. Ophldia Brogniart 
or. Pterosauria 
* *, • x».f ■'1''^ ' 
Class REPTILIA 
or. Therapsida Broom 
Bromosauria Broom 
Therocephalia Broom 
Anomodontia Owen 
Gynodbntla (Owen)Broom 
Class IMMMALIA Linn 
?sc. Prommalia Haeckel ^ 
Protodonta Osborn 
Prototheria Gill,Huxley 
Monotremata Geoffroy. 
a?heria P.& H.(Eutheraa) 
I- infraclass-Metatheria Hux 
or. (Triconodonta. Osborn 
?or. Trituberculata Osborn 
dr. IfiARSUPIALJA Illiger 
so. Aliotheria Marsh 
so. Diprotodontia Owen . 
so. Paucituberculata Amegh. 
so. Polyprotodontia Owen 
II- infraclass-Eutheria Hux 
superorder-lherictoidea Gre^ 
or. IITSECTIVORA (Gray) 
so. Lipotyphia Haeckel 
sect.-•fam.Pantolestidae 
sect.Zalambdod6nta Gill , 
■ ■J 
