. The Hoosier naturalist . ugh to bring toview the connecting air tube. We have many highly interestingchunks of boulders containing 2 to 4 ofthese species conglomerate. .Gaster-opods and small Itioceramus are frequent-ly thickly set in the concrete and in avery perfect state of preservation. Theseall belong to the cretaceous portion ofthe Bad Lands. The mammals of the Tertiary are someof them huge, of elephantine dimensions,as those know who are conversant withProfs. Marsh and Haydeivs explorations inthis locality, and who are familiar withDana and other authors. The Brontotherium and »Titano
. The Hoosier naturalist . ugh to bring toview the connecting air tube. We have many highly interestingchunks of boulders containing 2 to 4 ofthese species conglomerate. .Gaster-opods and small Itioceramus are frequent-ly thickly set in the concrete and in avery perfect state of preservation. Theseall belong to the cretaceous portion ofthe Bad Lands. The mammals of the Tertiary are someof them huge, of elephantine dimensions,as those know who are conversant withProfs. Marsh and Haydeivs explorations inthis locality, and who are familiar withDana and other authors. The Brontotherium and »Titanothr-rium are especially of this order. Theupper jaws and skull of the former animal are secured bv collectors here, andtwo jaws have been found clashed to-gether, and yet the conclusion cannot beformed that the upper jaw of the Bronto-therium and the lower jaw of the Titano-therium belong both to one animal, because the teeth are so dissimilar ly square, being 3% to 4 inches each the back molar of the Titanothe-. rium is about 4 inches long and 1% to 2inches broad. The skull of a Brontothe-rium here contains eight teeth to eachside of the upper jaw which taper in sizefrom the back to the front of the animal has been estimated to be 28feet in length and 8 or nine feet inheight. The Anchilherium or three-toed horse,the size of a fawn and resembling a pony,has teeth with uneven edges and concav-ities. The Hyracodon was a form similar tothe rhinoceros. The
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Keywords: ., boo, bookcentury1800, booksubjectbirds, booksubjectnaturalhistory
