triassic, ordovician, miocene, eocene, paleozoic, paleocene, silurian, oligocene, cretaceous, precambrian, proterozoic, palaeozoic, paleogene, mesozoic, turonian, pliocene, limestones, zechstein, archean, neocomian, dolomites, ostracod, palaeocene, stratigraphy, upper carboniferous, neogene, sandstone, shales, depositional, carboniferous, archaean, campanian, sedimentary, devonian period, schists, siltstone, clastic, mississippian, cretaceous period, pelitic, gabbro, syenite, granites, gneiss, granodiorite, carbonate, pleistocene, jurassic period, tertiary period, diabase, anticline, eocene epoch, claystone, cenozoic, brachiopods, facies, andesite, graben, lithology, basalts, mesozoic era, hornblende, lower carboniferous, greywacke, mesolithic, sediments, craton, crinoids, argillite, pyroxenite, sarmatian, footwall, amphibolite, carboniferous period, stratiform, cambrian period, gravels, metamorphism, covellite, pegmatite, porphyry, silicic, anticlines, dolerite, sulphides, evaporite, paleozoic era, stockwork, alkalic, ricinus, detrital, breccia, trilobites, triassic period, argillaceous, unconformity, mineralization, pitchblende, ultrabasic, huronian, sedimentary rock, permian, jurassic, cambrian, tertiary, strata, pennsylvanian, faunas, neolithic, liassic, nonmarine

anaspid, cephalaspid, cycadofilicales, equisetales, genus horneophyton, genus hynerpeton, genus ichthyostega, heterostracan, horneophyton, hynerpeton, hynerpeton bassetti, labyrinthodonta, labyrinthodontia, lepidodendrales, lyginopteridales, order cycadofilicales, order equisetales, order lepidodendrales, order lyginopteridales, osteostracan, placoderm, superorder labyrinthodonta, superorder labyrinthodontia

geological period, period

age of fishes