Plate 14

Globuligerina oxfordiana (Grigelis) from late Bajocian through early Kimmeridgian. Note that in these, well preserved, specimens there is no clear change in wall surface texture from Bajocian through Kimmeridgian. Nos. 1, 2 and 3, sample T2/8, Tojeira Fm., Montejunto, Portugal, Early Kimmeridgian, scale bars 50 µm. Nos. 10, 4a and 4b, borehole GdF 496, Le Havre, France, Early Oxfordian, scale bars 10 µm (donation G. Bignot, France). Nos. 5a, 5b and 6, Gnaszyn 6 sample, Częstochowa, Poland, Middle Bathonian, specimens scale bars 20 µm, wall texture scale bar 5 µm. Nos. 7, 8 and 9, sample 8, roof bed 19, Khouroukra, Dagestan, Late Bajocian, scale bars 20 µm for specimens 7 and 8, and 50 µm for specimen 9 with spiral view