HKB
PRIMARY OR PALÆOZOIC EXAMPLES
PERMIAN 19. PERMIAN. British Upper Permian of St. Bees’ Head, Cumberland (p. 386). Middle Permian, magnesian limestone, and marl-slate of Durham and Yorkshire, with Protosaurus (p. 387). Lower Permian sandstones and breccias of Penrith and Dumfriesshire, intercalated (p. 390). Foreign Dark-coloured shales of Thuringia (p. 392). Zechstein or Dolomitic limestone (p. 392). Mergel-schiefer or Kupfer-schiefer (p. 392). Rothliegendes of Thuringia, with Psaronius (p. 392). Magnesian limestones, etc., of Russia (p. 393). CARBONIFEROUS 20. UPPER CARBONIFEROUS. British Coal-measures of South Wales, with underclays inclosing Stigmaria (p. 397). Coal-measures of north and central England (p. 395). Millstone grit (p. 395). Yoredale series of Yorkshire (p. 395). Coal-field of Kilkenny with Labyrinthodont (p. 407). Foreign Coal-field of Saarbruck, with Archegosaurus (p. 406). Carboniferous strata of South Joggins, Nova Scotia (p. 409). Pennsylvania coal-field (p. 403). 21. LOWER CARBONIFEROUS. British Mountain limestone of Wales and South of England (p. 430). Same in Ireland (p. 437437). Carboniferous limestone of Scotland alternating with coal-bearing sandstones (p. 396). Erect trees in volcanic ash in the Island of Arran (p. 546). Foreign Mountain limestone of Belgium (p. 436). DEVONIAN or OLD RED SANDSTONE 22. UPPER DEVONIAN. British Yellow sandstone of Dura Den, with Holoptychius, etc. (p. 440); and of Ireland with Anodon Jukesii (p. 441). Sandstones of Forfarshire and Perthshire, with Holoptychius, etc. (p. 442). Pilton group of North Devon (p. 449). Petherwyn group of Cornwall, with Clymenia and Cypridina (p. 451). Foreign Clymenien-kalk and Cypridinen-schiefer of Germany (p. 450) 23. MIDDLE DEVONIAN. British Bituminous schists of Gamrie, Caithness, etc., with numerous fish (p. 443). Ilfracombe beds with peculiar trilobites and corals (p. 450). Limestones of Torquay, with broad-winged Spirifers (p. 451). Foreign Eifel limestone, with underlying schists containing Calceola (p. 453). Devonian strata of Russia (p. 454). 24. LOWER DEVONIAN. British Arbroath paving-stones, with Cephalaspis and Pterygotus (p. 446). Lower sandstones of Forfarshire, with Pterygotus (p. 446). Sandstones and slates of the Foreland and Linton (p. 454). Foreign Oriskany sandstone of Western Canada and New York (p. 456). Sandstones of Gaspe, with Cephalaspis (p. 455 ).
EXAMPLES
SILURIAN 25. UPPER SILURIAN British Upper Ludlow formation, Downton sandstone, with bone-bed (p. 459). Lower Ludlow formation, with oldest known fish remains (p. 461). Wenlock limestone and shale (p. 465). Woolhope limestone and grit (p. 467). Tarannon shales (p. 468). Beds of passage between Upper and Lower Silurian: Upper Llandovery, or May-hill sandstone, with Pentamerus oblongus, etc. (p. 468). Lower Llandovery slates (p. 469). Foreign Niagara limestone, with Calymene, Homalonotus, etc. (p. 479). Clinton group of America, with Pentamerus oblongus, etc. (p. 479). Silurian strata of Russia, with Pentamerus (p. 477). 26. LOWER SILURIAN. British Bala and Caradoc beds (p. 470). Llandeilo flags (p. 473). Arenig or Stiper-stones group (Lower Llandeilo of Murchison) (p. 475). Foreign Ungulite or Obolus grit of Russia (p. 477). Trenton limestone, and other Lower Silurian groups of North America (p. 479). Lower Silurian of Sweden (p. 477). CAMBRIAN 27. UPPER CAMBRIAN. British Tremadoc slates (p. 483). Lingula flags, with Lingula Davisii (p. 484). Foreign “Primordial” zone of Bohemia in part, with trilobites of the genera Paradoxides, etc. (p. 487). Alum schists of Sweden and Norway (p. 489). Potsdam sandstone, with Dikelocephalus and Obolella (p. 489). 28. LOWER CAMBRIAN. British Menevian beds of Wales, with Paradoxides Davidis, etc. (p. 484). Longmynd group, comprising the Harlech grits and Llanberis slates (p. 485). Foreign Lower portion of Barrande’s “Primordial” zone in Bohemia (p. 486). Fucoid sandstones of Sweden (p. 489). Huronian series of Canada? (p. 490). LAURENTIAN 29. UPPER LAURENTIAN. British Fundamental gneiss of the Hebrides? (p. 493). Hypersthene rocks of Skye? (p. 491). Foreign Labradorite series north of the river St. Lawrence in Canada (p. 491). Adirondack mountains of New York (p. 491). 30. LOWER LAURENTIAN. British Wanting? Foreign Beds of gneiss and quartzite, with interstratified limestones, in one of which, 1000 feet thick, occurs a foraminifer, Eozoon Canadense, the oldest known fossil (p. 491).