Brasilestiloxylon e solenobrasilioxylon, dois novos gêneros gondwânicos na formação Irati, Estado de São Paulo, Brasil

Diana Mussa


Wood samples showing peculiar features in the initial part of the gymnospermous wood body and in the pith are here described. The genus Brasilestiloxylon n.g. shows the conservative nature of its ealier vascular elements of the intermediate phase (Chaveau, 1911) which usually has been described as centripetal elements or mesarch xylem. The genus Solenohrasilioxylon is closely comparable to the genus Solenoxylon Krausel 1956, but in contrast it has in the central part of the pith, secretory canals also.

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