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Swiss Journal of Palaeontology
Fig. 10 | Swiss Journal of Palaeontology

Fig. 10

From: Evolutionary prospection in the Neogene planktic foraminifer Globorotalia menardii and related forms from ODP Hole 925B (Ceara Rise, western tropical Atlantic): evidence for gradual evolution superimposed by long distance dispersal?

Fig. 10

Variation of the mean keel angle in the upper keel region (Φ 1, in degrees) through time (in Ma) at Hole 925B for G. menardii (a), G. limbata (b), and G. multicamerata (c). In d means of Φ 1 are plotted together for better comparison (with ±95 % confidence intervals). Refer to Fig. 4 for explanation of parameters. For explanation of symbols see Fig. 5. Data and statistics can be read from Tables 4a–c and 6a–c in the electronic supplementary materials

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