. Bulletin of the British Museum (Natural History), Geology. 32 Neuropteris lubnensis Havlena * 1953 Neuropteris lubnensis Havlena: 153-154; pi. 6, figs 1-2. Comments. This is based on forty-eight specimens preserved in a sandstone, although only two were figured. They are undoubtedly unusual, having very large pinnules (up to 4 cm long and 2 cm wide), and do not fit into any previously described species. However, the arenaceous matrix is far from perfect for preserving this type of fossil, and the number of specimens illustrated is inadequate to determine the range of morphological variation,
. Bulletin of the British Museum (Natural History), Geology. 32 Neuropteris lubnensis Havlena * 1953 Neuropteris lubnensis Havlena: 153-154; pi. 6, figs 1-2. Comments. This is based on forty-eight specimens preserved in a sandstone, although only two were figured. They are undoubtedly unusual, having very large pinnules (up to 4 cm long and 2 cm wide), and do not fit into any previously described species. However, the arenaceous matrix is far from perfect for preserving this type of fossil, and the number of specimens illustrated is inadequate to determine the range of morphological variation, let alone frond architecture. Much better material needs to be documented before any- thing can be done with this species. Neuropteris montana Heer * 1879 Neuropteris montana Heer: 22; pi. 6, figs 22, 23. T 1960 Neuropteris montana Heer; Jongmans: pi. 21, fig. 121. Comments. From the form of the distal part of the pinna, the type clearly belongs to a paripinnate frond, presumably of the Potonieaceae. It is reputed to originate from the Cantabrian or lower Barruelian, which is far higher stratigraphically than Paripteris normally occurs. The venation is very poorly preserved, but may be anastomosed with very elongate vein-meshes. If so, then it may belong to Linopteris neu- ropteroides (Gutbier) Potonie, 1899, which sometimes occurs as high as Barruelian. However, the material is really inad- equate to give an unequivocal statement on this. CLEAL AND SHUTE The six species that cannot yet be placed in our generic classification fall into three groups. 1. N. cordata and N. zeilleri appear closely related to each other and it is far from certain that they are not in fact conspecific. Although widely recorded from the Stephanian and Autunian of France and the Iberian Peninsula, little is known of the frond architecture and nothing of the cuticles (the cuticles assigned to N. cordata by Barthel, 1976, in fact belong to Neurodontopteris auriculata - see above). 2. N. duprei
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