A NEW KIND OF SEXUAL DIMORPHISM IN ORDOVICIAN OSTRACODES |
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| Authors: | ROGER SCHALLREUTER INGELORE HINZ-SCHALLREUTER |
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| Affiliation: | Institut für Geographie und Geologie, Ernst Moritz Arndt-Universität, Friedrich Ludwig Jahn-Str. 17a, 17489 Greifswald, Germany;e-mail: |
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| Abstract: | Abstract: In Ordovician ostracodes (genus Incisua ) a new kind of sexual dimorphism is described, which is the first example among this group with males being the heteromorphs. The valves of males are larger and less frequent than the females, and are characterized by having a furrow in the ventral part. The furrow may have functioned as a device to enable the two sexes to cling together during mating. |
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| Keywords: | ostracodes Ordovician sexual dimorphism Baltoscandia. |
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