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|a Upper Campanian (Upper Cretaceous) ammonites from the Marshalltown Formation-Mount Laurel boundary beds in Delaware /
|c W. J. Kennedy and W. A. Cobban.
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| 260 |
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|a ,
|c 1997
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| 504 |
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|b ca. 30 refs.
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|b ca. 30 refs.
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| 650 |
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|a Kennedy, W. J..
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|a Cobban, W. A..
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| 300 |
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|a p. 62-73
|b il.
|c 28 cm.
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| 040 |
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|c AR-RiUNS
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| 866 |
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| 773 |
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|t JOURNAL of Paleontology
|w J3
|g Vol. 71, n. 1 (Jan. 1997)
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| 942 |
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|c PP
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| 999 |
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|c 22068
|d 22068
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