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Progress in Earth and Planetary Science
Fig. 7 | Progress in Earth and Planetary Science

Fig. 7

From: Evaluation of geochemical records as a paleoenvironmental proxy in the hypercalcified demosponge Astrosclera willeyana

Fig. 7

Frequency distributions (histograms) of correlation coefficients among geochemical records of sclerosponges. The Y-axis represents the number of individuals (sample number: N). The r values are divided into nine classes in the X-axis. A trend of the respective relations of two within-skeleton geochemical components is visualized. High frequency with r values of − 0.4–0.4 indicates a little significant relationship in within-skeletal geochemistry

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