Abstract

Describes the structure of a conifer from the upper Portlandian (Jurassic) of the Bray region, and assigns it to Xenoxylon phyllocladoides, hitherto unknown in France. Recognition of this species among the fossil woods from Cressensac in the Martel karst region indicates that the flora of the Cressensac locality is probably Jurassic, rather than Tertiary as previously described. Archaic radial punctations shown by another specimen in the Cressensac material also suggests the earlier age.

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