_Phyllopora_.
_Physa; columnaris_.
Pigs.
Pilton Group.
_Pinites_.
_Pisces (_see_ Fishes).
_Pisolite_.
Pisolitic Limestone of France.
_Placodus; gigas_.
Placoid Fishes; of the Upper Silurian; of the Devonian; of
the Carboniferous; of the Permian; of the Trias; of the
Jurassic; of the Cretaceous; of the Eocene; of the Miocene.
_Plagiaulax_.
_Planolites; vulgaris_.
_Planorbis_.
Plants, of the Cambrian; of the Lower Silurian; of the Upper
Silurian; of the Devonian; of the Carboniferous; of the
Permian; of the Trias; of the Jurassic; of the Cretaceous;
of the Eocene; of the Miocene.
_Plasmopora_.
_Platanus; aceroides_.
_Platephemera antiqua_.
_Platyceras; dumosum; multisinuatum; ventricosum_.
_Platycrinus; tricontadactylus_.
_Platyostoma; Niagarense_.
Platyrhine Monkeys.
_Platyschisma helicites_.
_Platysomus; gibbosus_.
_Platystoma_.
Pleistocene period; climate of.
_Plesiosaurus; dolichodeirus_.
_Pleurocystites squamosus_.
_Pleurotoma_.
_Pleurotomaria_.
_Plicatula_.
Pliocene period; rocks of, in Britain; in Belgium; in
Italy; in North America; life of.
_Pliopithecus; antiquus_.
_Pliosaurus_.
_Podocarya_.
_Podozamites; lanceolatus_.
Polir-schiefer.
_Polycystina_; of Barbadoes-earth.
_Polypora; dendroides_.
_Polypterus_.
_Polystomella_.
_Polytremacis_.
_Polyzoa_, of the Cambrian; of the Lower Silurian; of the
Upper Silurian; of the Devonian; of the Carboniferous; of the
Permian; of the Trias; of the Cretaceous; of the Miocene.
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