Cycadopites coxii was named by Visscher (1966) [Diagnosis: Pollen monocolpate with approx, elliptical outline. Thin exine with fine infrastructure. Sulcus lemniscatoid to irregularly elliptical depending on the fossilisation. Size very constant (28—3 1 μ). Many specimens show a wide sulcus, which is not lemniscatoid; these forms should have been considered as Monosulcites Cookson 1947 ex Couper 1953. However, they can be derived from true lemniscatoid Cycadopites forms by progressive transitions. C. coxii differs from Cycadopites sufflavus n. sp. by its smaller size; the size range of the latter species is also very constant (42-45 μ); transitions were not recognized, so a separation of the species seems justified.]. It is not extant. It is considered to be a form taxon. Its type specimen is Single grain slide 31-HV-259; Plate XX, a microspore (pollen).