Endoscrinium galeritum ssp. fornicatum (Klement, 1960) Lentin and Williams, 1973

Originally Scriniodinium galeritum ssp. fornicatum, subsequently (and now) Endoscrinium galeritum ssp. fornicatum.
Stover and Evitt, 1978, and Jan du Chêne et al., 1986, retained this taxon in Scriniodinium Klement, 1957, as Scriniodinium galeritum ssp. fornicatum. Lentin and Williams, 1981, 1989, retained it in Endoserinium, as Endoserinium galeritum ssp. fornieatum.
Holotype: Klement, 1960, pl.1, figs.7-8; Jan du Chêne et al., 1986, pl.107, figs.4-6
Paratypes: Klement, 1960
Locus typicus: Scherstetten 1 Bore
Stratum typicum: Middle Oxfordian

Original diagnosis: Klement, 1960, p.25: Scriniodinium galritum ssp. fornicatum
A subspecies of Scriniodinium (endoscrinium) galeritum, characterized by apical, antapical and marginal thickened bulge of the outer shell. It is marginally not flattened. Spiral girdle furrow, slighly indented, of medium breadth. Offset of the ends about two girdle widths. Plates convexly vaulted; sutures thickened lash-shaped.
Dimensions: Holotype: outer shell 89:75 Ám, inner body 66:63 Ám

Affinities: Klement, 1960, p. 26: Scriniodinium galritum ssp. fornicatum
The thickened bulges of the external membrane are a good distinctive criterium to the related subspecies S. galeritum galeritum.