Fig. 1 in Neokilianina Concava Ramalho, 2015 And Neokilianina Rahonensis (Foury & Vincent, 1967): A Dimorphic Pair Of Upper Jurassic Larger Benthic Foraminifera?

Fig. 1 Examples of dimorphic pairs in Orbitolinidae (a-d), the paravalvulinid Kilianina blancheti Pfender (e-f), and the parurgoninid Neokilianina rahonensis (Foury & Vincent) (g-h), with the interpretation of N. concava Ramalho as representing the B-form of the former. a Montseciella? arabica (Henson), paratype of Henson, 1948, pl. 14, fig. 1, as Dictyoconus arabicus, upper Barremian of Qatar; b thin-section material from Alteneiji, 2021, upper Barremian Kharaib Formation, United Arabian Emirates; c-d Calveziconus lecalvezae from Caus & Cornella (1981, pl. 1, figs. 1 and 5, Campanian of Spain). e-f from Foury & Vincent (1967, fig. 1, neotype and paratype). g from Foury & Vincent (1967, pl. 1, fig. 1, holotype, Kimmeridgian of France) modified; 'pr. st.' = informal praevalvulinid stage sensu Septfontaine, 2020 = 'helicospiral' chambers sensu Foury & Vincent, 1967; h from Ramalho (2015, pl. 2, fig. 5, paratype, Kimmeridgian of Portugal).