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III.—Observations on Señor Ameghino's “Notes on the Geology and Palæontology of Argentina”

Published online by Cambridge University Press:  01 May 2009

Arthur Smith Woodward
Arthur Smith Woodward
Affiliation:
British Museum (Natural History)
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Extract

The general conclusions of the brothers Ameghino in reference to the geology of Patagonia, as detailed in the foregoing valuable synopsis of results, may be still more briefly stated in the following manner

(1) The oldest sedimentary rocks in which fossils have been found are red sandstones, containing mineralized wood, Dinosaurian bones, and other smaller reptilian remains. “Upper Cretaceous.”

(2) The terrestrial or fresh-water Pyrotherium Beds succeed these and may be partly intercalated with them. They contain a singular mammalian fauna, notably primitive Ungulata. “Upper Cretaceous.”

Type
Original Articles
Information
Geological Magazine , Volume 4 , Issue 1 , January 1897 , pp. 20 - 23
Copyright
Copyright © Cambridge University Press 1897

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