Arkell.1956.Jurassic..

384 THE INDIAN PENINSULA
Jurassic and perhaps not only the Rhaetic but also the lowest Cretaceous',
it is necessary to return to the threefold division of the Gondwana system
as advocated by Vredenburg (1910) and adopted in the earlier text-book
by Wadia (1926). According to this classification the Lower Gondwanas
are Upper Palaeozoic, the Middle are Triassic and the Upper are Cretaceous.
In Table 17 an attempt is made for the first time to rearrange
the classification in accordance with palaeontological evidence. The
correlations in the left-hand column are all that is possible from existing
TABLE 17.—CORRELATION OF THE GONDWANA SYSTEM
CORRELATION FORMATIONS FAUNAS, ETC.
? APTIAN AND LATER .
UPPER GONDWANA
Jabalpur
Tripetty group, with Trigonia, etc.
'a retrouver'; Chikida and Pavalur
beds
UPPER NEOCOMIAN Rajmahal Budavada, Ragavapuram, Sripermatur
beds, all with Upper
Neocomian ammonites
JURASSIC . Major non-sequence
UPPER TRIASSIC
LOWER TRIASSIC
PERMIAN .
UPPER CARBONIFEROUS
MIDDLE GONDWANA
Mahadeva
Panchet
LOWER GONDWANA
Damuda
Talchir
Maleri Beds with Upper Triassic
vertebrates
Triassic vertebrates
Umaria marine bed with Carbo-
Permian brachiopods, etc., between
Talchir boulder bed and Damuda
Series
knowledge, omitting pure speculation. Dating of the Jabalpur is based on
plant correlation (Fox, 1931, pp. 113, 235) with the Umia plant beds of
Cutch, which according to Nath (1932) overlie the marine Aptian (see
p. 387)-
Comparison with NE. Africa thus becomes much closer. Once again
we have intermittent Cretaceous transgressions, fingering out in continental
sandstones, overstepping across much older continental sandstones
and marine beds of Upper Palaeozoic and Triassic age, with the Jurassic
palaeontologically unrepresented. Peninsular India repeats the history
of the Nubian Sandstone.
MARINE COASTAL FACIES ON THE FORELAND: CUTCH
On the coast between Bombay and Karachi, east of the mouth of the
Indus, lies the classic area of Cutch (Kutch, Kachh), probably the most
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