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Fig. 10.19. Distributional patterns of dasyclad associations on Early Cretaceous carbonate platforms in the French and
Spanish Pyrenees Mountains. Species composition of the association differs significantly in the various parts of the tidal and
shallow subtidal shelf environments. A : Berriasian and Valanginian. B : Barremian to Aptian (Urgonian facies). Based on
Peybernes (1979). See Masse (1993) for a discussion of facies development during time and the biostratigraphical value of
dasyclad species associations. Dotted lines indicate rare occurrences.
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