SECONDARY|OÖLITIC |Coal Lies at base |species | +——————————-+————————————————————-+———————————————————-+—————— |TRIASSIC |Sandstones, |Gigantic Reptiles, |Promamm | |Limestones, Clays |Small Marsupials |alia ————————-+——————————-+————————————————————-+———————————————————-+—————— |PERMIAN |Marls, Magnesian | Reptiles |Protam- | |limestones, Conglomerates.| |nia +——————————-+————————————————————-+———————————————————-+—————— |CARBONI- |Carboniferous limestone,|Scorpions, |Urodela | FEROUS |Coal, Ironstone, |Spiders, Beetles,|Sozo- | |Sandstone, Clay, Shales |Flies, Amphibia |branchii +——————————-+————————————————————-+———————————————————-+—————— |DEVONIAN |Old Red Sandstone, |Fossil land plants, |Dipnoi | |Shales, Coralline |Fishes, First |Selachii | |Limestone |fossil insect | +——————————-+————————————————————-+———————————————————-+—————— |SILURIAN |Slates, Limestone, |Corals, Spiral |Monorrh- PALÆOZOIC| |Conglomerates, |Shells, King-Crabs, |ini OR | |Shales, Sandstones |Plates & Scales of |Acrania PRIMARY | | |Fishes, Annelides | | | |(sea-worms) | +——————————-+————————————————————-+———————————————————-+—————— |CAMBRIAN |Slates, Limestone, |Sea-weeds, Sponges, |Himatega | |Conglomerates, |Star-fishes Sea- |Turbell- | | |lilies, Shell-fish, |aria | | |First land plant |Gastrœada +——————————-+————————————————————-+———————————————————-+—————— |HURONIAN |Partially Metamorphosed|Lowly organized |Ciliata | |Limestone, Sandstone, |Molluscs |Synamœbæ | |Slates, and Conglomerates| |Amœbæ +——————————-+————————————————————-+———————————————————-+—————— |LAURENTIAN |Highly Metamorphosed |Fossil Foraminifera |Monera | |Limestone | (Protozoa) |(Bioplasm) ————————-+——————————-+————————————————————-+———————————————————-+—————— AZOIC |PLUTONIC |Molten Granite & Quartz |No life remains |No life | |Partially or Wholly | | | |Igneous. Base of all rocks| | ————————-+——————————-+————————————————————-+———————————————————-+—————— TERTIARY PERIOD IN EUROPE.