lower carboniferous, lower carboniferous period, missippian period, mississippian, pennsylvanian, pennsylvanian period, upper carboniferous, upper carboniferous period

carboniferous period, cretaceous, neogene, paleocene, palaeo, anhydrite, evaporite, semidesert, palaeolithic, claystone, archaean, paleogene, devonian period, detrital, outwash, anorthosite, upper carboniferous, permian period, mesolithic, precambrian, paleozoic era, orogenic, jurassic period, stromatolite, dolomites, cenozoic era, middle paleolithic, pliocene, metamorphic rock, cambrian period, hummocks, eocene, mesozoic era, midden, sarmatian, fossilisation, eocene epoch, eclogite, phyllosilicate, oligocene epoch, silurian, crinoids, campanian, iguanodon, conodonts, kyanite, hadean, microfossil, loess, abyssal, palaeontological, desiccating, tumulus, coprolite, massifs, depositional, eolian, calcic, ochres, ironstone, craton, igneous rock, dolmen, ordovician, ammonite, glauconite, noachian, triassic period, tufa, ostracods, palaeozoic, gondwanaland, laurasia, yellow ocher, brachiopods, geochronology, foreland, cretaceous period, halite, lavas, pyrites, sandstone, neolithic, substrata, relict, upper paleolithic, nephrite, colluvium, miocene epoch, overthrust, lithic, pleistocene epoch, devonian, phanerozoic, fossae, clayey, magmas, anticlines, faunas, turonian, syrtis major, plagioclase, jurassic, miocene, permian, tertiary, cambrian, pleistocene, triassic, strata, paleozoic, pennsylvanian, stratum, floras, mesozoic, liassic, oligocene, oolitic, cenozoic, arenaceous, nonmarine

bennettitaceae, bennettitales, class coniferopsida, class pteridospermopsida, coal, coniferophyta, coniferophytina, coniferopsida, family bennettitaceae, genus lyginopteris, genus pecopteris, lepidodendrales, lyginopteris, order bennettitales, order lepidodendrales, order temnospondyli, pecopteris, pteridospermopsida, subdivision coniferophytina, temnospondyli

paleozoic, paleozoic era

geological period, period

carboniferous period