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![](./images/clear.gif) 1.- CLYPEOLUS, A NEW ACRITARCH GENUS FROM THE ORDOVICIAN AND SILURIAN
ELSEVIER; AMSTERDAM; NLD; NETHERLANDS, 1997
FESTSCHRIFT FOR HELEN TAPPAN AND ALFRED R. LOEBLICH JR.
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![](./images/clear.gif) 2.- PALEOCLIMATOLOGIC, PALEOECOLOGIC AND BIOSTRATIGRAPHIC SIGNIFICANCE OF THE MIDDLE CRETACEOUS ELATERATE MICROFLORAL PROVINCE, GONDWANA
AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS; TULSA, OK; USA; UNITED STATES, 1998
AAPG INTERNATIONAL CONFERENCE AND EXHIBITION; ABSTRACTS
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