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1.- GRAPTOLITE SYNRHABDOSOMES; BIOLOGICAL OR TAPHONOMIC ENTITIES? FRANKLIN AND MARSHALL COLLEGE, DEPARTMENT OF GEOLOGY; LANCASTER, PA; USA; UNITED STATES, 1998 Ver registro
2.- THE STRATIGRAPHIC DISTRIBUTION OF GRAPTOLITES IN THE CLASSIC UPPER MIDDLE ORDOVICIAN UTICA SHALE OF NEW YORK STATE:AN EVOLUTIONARY SUCCESSION OR A RESPONSE TO RELATIVE SEA-LEVEL CHANGE? 1998 Ver registro
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