| MASTODON | Extinct elephant-like mammal of the Miocene and Pleistocene epochs; from Greek, 'breast tooth' (8) |
| PLIOCENE | Epoch of Tertiary period between Miocene and Pleistocene (8) |
| STEGODON | An extinct elephant-like mammal with ridged teeth (8) |
| AMERICAN | ___ marten, weasel-like mammal of the USA and Canada (8) |
| NEOGENE | Later division of the Tertiary period of the Cenozoic era, subdivided into the Miocene and Pliocene epochs (7) |
| TORTOISE | One of a "creep" of chelonian land reptiles with a beak, carapace and elephant-like legs, such as Charles Darwin's galapago, "Harriet" (8) |
| MAMMOTHS | Extinct elephants of the Pleistocene epoch (8) |
| IRISHELK | Extinct Eurasian deer of the Pleistocene epoch with antlers up to four metres across; Megaloceros giganteus (5,3) |
| WOOLLYMAMMOTH | A shaggy-coated species of extinct elephant-like mammal (6,7) |
| STONEAGE | Pleistocene Epoch period |
| EPOCHS | The Miocene and Pliocene |
| RISS | Third of the four major Alpine glacial periods of the Pleistocene epoch, between the Gunz and Mindel and the Wurm (1,1,1,1) |
| RATEL | Badger-like mammal of the weasel family (Mustelidae) found in Africa and Asia; Mellivora capensis (5) |
| GIANTPANDA | Herbivorous bear-like mammal of the bamboo forests of China (5-5) |
| OLIGOCENE | Third epoch of the Paleogene period, succeeded by the Miocene approximately 23 million years ago (9) |
| SOREX | Genus of small mouse-like mammals of the family Soricidae to which the shrews belong (5) |
| MAMMOTH | Large extinct elephant of the Pleistocene epoch, typically having a brown hairy coat and long up-curved tusks (7) |
| SMILODONS | Members of an extinct genus of short-limbed sabre-toothed tigers of the Pleistocene epoch (9) |
| PECCARY | Pig-like mammal of the Americas |
| SHREW | Mole-like mammal of the order Eulipotyphia (5) |
