Back
Endoscrinium reticulatum
Endoscrinium reticulatum (Pocock, 1972, p.91–92, pl.23, fig.3) Riding and Fensome, 2003, p.23.
Originally Scriniodinium, subsequently Scriniodinium?, thirdly Scriniocassis, fourthly (and now) Endoscrinium.
Holotype: Pocock, 1972, pl.23, fig.3; Jan du Chêne et al., 1986a, pl.108, figs.1–4.
Locus typicus: Imperial Tidewater Wapella, Western Canada
Age: Callovian.
Original description: Pocock, 1972, p.91-92
Vesicle two-layered, comprising a rounded capsule overlain by an infrareticulate outer membrane; epitheca hemispherical; no apical spine developed; hypotheca elongate hemispherical; base somewhat flattened; transverse girdle detectable as a distinct thickening encircling the equator; longitudinal furrow not detectable; some indication of plating reflected onto the outer surface; not sufficiently developed to termine tabulation; archeopyle simple, precingular, with a free operculum; capsule 0.5 µm thick; smooth; outerlayer 5.0 µm, infrareticulate; brocci rounded; 2.0 (4.4) 8.0 µm wide; muri up to 1.0 µm wide; surface of vesicle scabrate; colour pale yellow; length of grain 37.4 µm; width of grain 35.2 µm length of capsule 31.9 µm; width of capsule 27.5 µm.
Originally Scriniodinium, subsequently Scriniodinium?, thirdly Scriniocassis, fourthly (and now) Endoscrinium.
Holotype: Pocock, 1972, pl.23, fig.3; Jan du Chêne et al., 1986a, pl.108, figs.1–4.
Locus typicus: Imperial Tidewater Wapella, Western Canada
Age: Callovian.
Original description: Pocock, 1972, p.91-92
Vesicle two-layered, comprising a rounded capsule overlain by an infrareticulate outer membrane; epitheca hemispherical; no apical spine developed; hypotheca elongate hemispherical; base somewhat flattened; transverse girdle detectable as a distinct thickening encircling the equator; longitudinal furrow not detectable; some indication of plating reflected onto the outer surface; not sufficiently developed to termine tabulation; archeopyle simple, precingular, with a free operculum; capsule 0.5 µm thick; smooth; outerlayer 5.0 µm, infrareticulate; brocci rounded; 2.0 (4.4) 8.0 µm wide; muri up to 1.0 µm wide; surface of vesicle scabrate; colour pale yellow; length of grain 37.4 µm; width of grain 35.2 µm length of capsule 31.9 µm; width of capsule 27.5 µm.