— 233 — 
the interior of Parand in Devonian time is certain, since undoubted 
marine fossils occur near Tibagy, Ponta Grossa, Jaguariahyva and 
other points, but whether or not the sea had retired permanently 
from Parana and Sdo Paulo previous to the dawn of Permian time, 
is not certain owing to the problematic nature of the animal remains 
found in the Permian limestones of Parand and Sado Paulo. 
Hence, until thesé are critically studied, the question will remain 
unsettled, because the typically marine forms do not appear to be 
present. 
