Neuropteris attenuata, a narrow-stemmed, leaning or lianescent seed fern from the Upper Pennsylvanian of Lower Saxony, Germany

A stem segment and frond of Neuropteris attenuata Lindley et W. Hutton (Pteridospermopsida, Medullosales) are described from the lower Westphalian D (Upper Pennsylvanian) of the Piesberg quarry near Wallenhorst (north of Osnabrück, Lower Saxony, northwestern Germany). The narrow diameter of the stem (3–4 cm), conspicuously long internodes (>20 cm), and the large size of the frond (∼90 cm long) strongly suggest that N. attenuata was a non-self-supporting, leaning or lianescent plant.