The extinct elephantlike animal referred to in the crossword solution is the Mastodon, an extinct genus of proboscideans which lived from the Miocene epoch through the Pleistocene epoch. Mastodons were large, hairy, and had long tusks. They were closely related to modern elephants, but were more heavily built and had shorter legs. They were herbivores and lived in a variety of habitats, including forests, grasslands, and wetlands.