Jury-Law books

CHAPTER XXII.
PERMIAN OR MAGNESIAN LIMESTONE GROUP.
Line of Separation between Mesozoic and Palaeozoic Rocks.
Distinctness of Triassic and Permian Fossils.
Term Permian.
Thickness of calcareous and sedimentary Rocks in North of England.
Upper, Middle, and Lower Permian.
Marine Shells and Corals of the English Magnesian Limestone.
Reptiles and Fish of Permian Marl-slate.
Foot-prints of Reptiles.
Angular Breccias in Lower Permian.
Permian Rocks of the Continent.
Zechstein and Rothliegendes of Thuringia.
Permian Flora.
Its generic Affinity to the Carboniferous.
In pursuing our examination of the strata in descending order, we have next to
pass from the base of the Secondary or Mesozoic to the uppermost or newest of
the Primary or Palaeozoic formations. As this point has been selected as a line
of demarkation for one of the three great divisions of the fossiliferous series,
the student might naturally expect that by aid of lithological and
palaeontological characters he would be able to recognise without difficulty a
distinct break between the newer and older group.


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