Fig. 6

1–15, Favusella hoterivica from sample Cr1 of Berriasian age in the Krasnoselivka section, Crimea, Russia and Globuligerina oxfordiana from the upper Tojeira Fm of Kimmeridgian age in the Montejunto section, Portugal. Note the typically ‘lifted up’ second chamber in the last whorl of both taxa. 1–5, Favusella hoterivica (Subbotina). Note arched aperture and strongly reticulate wall texture. For comparison, Fig. 6 illustrates well-preserved Favusella hoterivica with arched aperture with rim and strongly reticulate wall texture from DSDP Site 397, Hauterivian, offshore Morocco (Butt 1979). 7–10 Show Favusella hoterivica from sample Cr1, Crimea in optical photography with arched aperture, and the typical ‘sticking up’ of the third but last chamber. 11–15, Globuligerina oxfordiana (Grigelis) from the Kimmeridgian of the Upper Tojeira Fm, Montejunto, Portugal (Gradstein et al. 2017a), ancestor to Favusella hoterivica (Subbotina). Note the commonly observed rugulose wall texture in Globuligerina oxfordiana (Grigelis) in 14 and the rarely observed reticulate wall texture in 15 (from tiny but typical G. oxfordiana specimens in the Oxfordian of Normandy, France, collection Gradstein)