Riphean
Riphean An era of the Middle Proterozoic, lasting from about 1675 to 825 Ma ago, that preceded the Sinian. Russian usage extends the era to about 680 Ma ago.
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Neogene , Neogene The later of the two periods which comprise the Tertiary sub-Era, preceded by the Palaeogene, followed by the Quaternary, and dated at 23.3–1… Paleozoic , Palaeozoic The first (570–248 Ma) of the three eras of the Phanerozoic. The Cambrian, Ordovician, and Silurian Periods together form the Lower Palaeo… Era , era •Altamira, chimera, clearer, Elvira, era, hearer, Hera, hetaera, interferer, lempira, lira, lire, Madeira, Megaera, monstera, rangatira, rearer,… Cretaceous , Cretaceous •factious, fractious •anxious • captious •precious, semi-precious •infectious •conscientious, contentious, licentious, pretentious, senten… Mesozoic Era , In geologic time , the Mesozoic Era, the second era in the Phanerozoic Eon , spans the time between roughly 250 million years ago (mya) and 65 mya.
T… ma non troppo , ma •aargh, Accra, afar, ah, aha, aide-mémoire, ajar, Alcazar, are, Armagh, armoire, Artois, au revoir, baa, bah, bar, barre, bazaar, beaux-arts, Beka…
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Riphean