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Zoogeographical studies on Rhizostomeae (Scyphozoa)
Kramp, P.L. (1970). Zoogeographical studies on Rhizostomeae (Scyphozoa). Vidensk. Medd. Dan. Naturhist. Foren. 133: 7-30
In: Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening. Dansk Naturhistorisk Forening: Copenhagen. ISSN 0373-3874, more
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  • Kramp, P.L.

    The extension of the geographical distribution of the Rhizostomeae from their common origin in the Indo-West-Pacific region was accomplished in the following succession: (1) Stomolophidae were carried to American waters before the passage through Central America was closed in the Pliocene; one sp obtained an extensive distribution in warm areas on both sides of the continent, but their predecessors in the East Atlantic and Indo-West-Pacific regions were extinguished. (2) Representatives of Cassiopedidae and Lychnorhizidae were established in West Atlantic waters somewhat later, when the passage to the Pacific was closed; they survived the West Atlantic deterioration, but East Atlantic representatives were extinguished. (3) Some of the Rhizostomidae, Catostylidae and Cepheidae survived the deterioration in the East Atlantic, but did not cross the ocean towards America. (4) The Versurigidae, Thysanostomidae, Mastigiadidae and Lobonemidae remained in the Indo-East-Pacific region.

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