OLASSIFICATION AND DISTRIBUTION. 103 
2 
ae 8 Recent. 
oO 
Pliocene. 
D Prrreee es Rarer Poet (eemaren Ear Selle wamecai ly Posi we tes seen 
a Miocene. 
& 
ae Eee Gere Seren Gere Been Serene Beers BS On el Sennen 
Eocene. 
Creta- 
2 ceous. 
be 
@ }...... aaah cas sas Mace oaiewen terete sects doen Pes Prdcan|romacntaners 
oS 
| - 
8 Jurassic, 
o 
mn aneee Peer) Pee eee) Pere ry wee eres eseessorm- seoensas oe See eee eee ee 
Triassic. 
Permian. 
Carbon- 
a) iferous. 
fo} 
No [-cceee err) Oereeee ere Pee P EPR See Ceres os 
° 
B Fi 
oe Devonian. 
Ay i 
5 aa Kemeny steseneceneeeeeceseceresescees cess oa Woe heise 
‘2 . . 
PP af . |Silurian. 
a ga 
g I Sa 
ot ess 
& BES 
2o2 
g 8B 
ae 
3.8 
oAQ 
—~ 
xs 2 
‘ ; ad | 
a : 8 3 sy : 
£ #£ . bp SS & 
a2 € @ #2 §$ g 
Be ry & ° a rg & 
° a ° < a 
2 &» @ F FB & & 
a N ° to) pq Ay Au 
Fic. 43.—Chart showing distribution of plants in Geological Time. 
