82 
PAST HISTORY OF ANIMALS. 
Quaternary or 
Post-Tertiary. 
Pliocene. ¢ 
coe santecee aces Bases ans sees Beale oesienteess I >| eee] Cree 
RS : a 3 3 g Ea g () 
8 Miocene. 4 a 2 = z & 
<3 2 ek i : 
raf 
< G ee! fey wee 9 cece ee . oe € ween % ed . = er es 
5 < Modern 
Eocene. Types Placentals. 
Cretaceous, cious rien Modern rogened and 
steans. | Types. orms: 
A 
RS gala armenia es eieanens ee Corie) Career (ee ee eee Ger civtd piseinjwieies oa o% 
as ; 
8 : J) Marsupials 
« 8 Jurassic. ee and Mono- 
§ g pleryx."  tremes (?) 
GY wscseuising Gace pamanead es Paces: Pees eeerer i onbatradanad oostenonennen Laie mahae neon 
Triassic. Few primi- 
tive types. 
Permian. 
“i Laby- 
Carboniferous. tint 
donts, 
Devonian or Old ae ; 
Red Sandstone. Dipnoi. 
MS viecuors i pcennedle uxpaauaens Paseeneh ntenee yeaa o18s~enpa ies Redeeen ee a Beat g Ahoy Eye : 
8 
8 Ganoids 
8 ‘Naxians and 
s Silurian. Elasino- 
$ branch 
Q i) Seren Serine i ier rr i a ei cr eae 
8 . 
& Ordovician. 
x es Pee ee) e! Ce es oe naee 
Representa- 
tives of all 
. the chief 
Cambrian. lasses. GE 
Inverte- 
brates. 
Pre-Cambrian 
or Archzan. 
