Tetheopsis ingens (Tinoceras ingens), large extinct mammal of the Eocene. Illustration by J. Smit from H. N. Hutchinson's "Extinct Monsters and Creatures of Other Days," Chapman and Hall, London, 1894.

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Keywords: ., annectens, creatures, days, dinosaur, eocene, extinct, hutchinson, illustration, ingens, mammal, monsters, palaeontology, paleontology, smit, tetheopsis, tinoceras, victorian