Fig. 5

Palaeogeographic maps showing the distribution of Spirematospermum from the Late Cretaceous to the Pliocene (a−f), based on the Cretaceous occurrences (Goth 1986; Knobloch and Mai 1986; Friis 1988) and the compilation of the Cenozoic occurrences (Fischer et al. 2009). – S. chandlerae;
− S. friederichii;
− S. sp. from Austria;
− S. sp. from USA;
− S. wetzleri