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Rudolf Roettger
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Journal Article

Larger Foraminifera; variation in outer morphology and prolocular size in Calcarina gaudichaudii

Rudolf Roettger, Ralph Krueger, Sacha de Rijk
Published: 01 April 1990
Journal of Foraminiferal Research (1990) 20 (2): 170–174.
DOI: https://doi.org/10.2113/gsjfr.20.2.170
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Heterostegina apogama, a new Holocene nummulitid (Protozoa, Foraminiferida) from Hawaii

Rudolf Roettger
Published: 01 July 1987
Journal of Foraminiferal Research (1987) 17 (3): 187–189.
DOI: https://doi.org/10.2113/gsjfr.17.3.187
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Symbiont-influenced isotopic disequilibrium in Heterostegina depressa

Mary Ann Zimmerman, Douglas F. Williams, Rudolf Roettger
Published: 01 April 1983
Journal of Foraminiferal Research (1983) 13 (2): 115–121.
DOI: https://doi.org/10.2113/gsjfr.13.2.115
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Shape trends in Heterostegina depressa (Protozoa, Foraminiferida)

Rudolf Roettger, Pamela Hallock
Published: 01 July 1982
Journal of Foraminiferal Research (1982) 12 (3): 197–204.
DOI: https://doi.org/10.2113/gsjfr.12.3.197
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