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?????
[
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- ^
K. M. Cohen? S. Finney? P. L. Gibbard (January 2013).
"International Chronostratigraphic Chart"
(PDF)
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?????
(PDF)
?? 26 ?????? 2018
. ???? ???? ?????? ?????? 2020
.
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Ogg, James G.; Gradstein, F. M; Gradstein, Felix M. (2004). "1: Chronostratigraphy: linking time and rock".
A geologic time scale 2004
. Cambridge, UK: Cambridge University Press. ?. 45.
ISBN
:
0-521-78142-6
.
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: ????? ?????????: ????? ??????: ????? ???????? (
link
)
- ^
Gradstein? Felix M.
"On the Geologic Time Scale 2008"
(PDF)
. International Commission on Stratigraphy. ?. 5. ????? ??
?????
(PDF)
?? 2018-06-19
. ???? ???? ??????
2013-12-18
.
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Vandenberghe? N. (2012). "28: The Paleogene Period". ?? Felix M. Gradstein, James G. Ogg, Mark D. Schmitz and Gabi M. Ogg (??????).
The geologic time scale 2012
(?. 1st ed.). Amsterdam: Elsevier. ?. 856.
ISBN
:
978-0-44-459425-9
. ????? ??
?????
?? 2015-09-24.
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