. Figure 19.—Side view of skull of Tinoceras pugnix, Marsh (So. 104J). FiQDRE 20.—Anterior part of skull of Tinoceras grande. Marsh (No. 1040). Figure 21.—Anterior part of skull of Tinocems anneclens, Marsh (No. 1043). m'. maxillary protuberauce; me. extcrn;il auditory meatus ; b'. nasal protuberance; o. occipilal condyle; p'. parietal ; pm. prema.'cillary bone; pn. prcuasal ossicle. All the figures aie one-eicrlitli n itural size.

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Keywords: ., bookcentury1800, bookdecade1880, booksub, booksubjectpaleontology