 | Washington Academy of Sciences (Washington, D.C.) - 1909 - 352 Seiten
...type, and more nearly related to the Jurassic forms below than to those in the Tertiary above. . . . These remains are not transitional between Mesozoic...division of the Coryphodon beds, or lower Wasatch (Puerco) is clearly Tertiary, and the great break is between this horizon and the Ceratops beds of... | |
 | Indiana Academy of Science - 1907 - 1032 Seiten
...250. 251) says that the mammals of the Lance Creek deposits are not transitional between the Mesozolc and Tertiary forms, but their affinities are with the former beyond a doubt; thus indicating a great fauiial break. * * * and the great break is between this horizon [the Peurco] and the Cera tops beds... | |
 | Zoological Society of London - 1893 - 972 Seiten
...point in this direction" *. In Part III. of " Discovery of Cretaceous Mammalia " Marsh again states : " These remains are not transitional between Mesozoic...Tertiary forms, but their affinities are with the _oriner beyond a doubt " *. To me it appears, from what we now know of those important fossils called... | |
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... considered. With regard to the relationships of the mammals of the Lance Creek beds to those of the Puerco and Torrejon extremely diverse views have been expressed. Marsh (Amer. Jour. 