A CIRCUM-INSULAR PALZOZOIC FAUNA, 
ace poe =o= 
Legend 
Approximate 
Shore line 
---——Boundea 
Silurian areas, OY 
Distribution of Land 
and Water during % 
Early Devonian Time’ 
‘ 
H 
4 
‘ 
‘ 
‘ 
H 
‘ 
‘ 
{ 
LS 
shore line 
Distribution of Land 
and Water at the Close 
of Devonzan Times 
gO 
c 
J) 
