Back
Canninginopsis intermedia
From Fensome et al., 2019:
Canninginopsis intermedia Morgan, 1980, p.18, pl.3, figs.4–8.
Holotype: Morgan, 1980, pl.3, figs.7–8; Helby et al., 1987, figs.29E–F.
NOW Cerbia. Originally Canninginopsis, subsequently (and now) Cerbia.
Age: early Albian.
---------------------------------------------------------------------------------------------------
Original description: [Morgan, 1980, p. 18]:
Description:
Single-walled cysts with subcircular to pentagonal ambitus; distinct rounded bulges mark apex and two slightly unequal antapical horns; cingulum marked by shallow groove slightly offset at sulcus; cyst ornament of 0.5-1.0 µm diameter granules, larger, denser and more aligned in two paracingular rows and in peritabular position around the dorsal paraplates;
ventral tabulation not reflected; intratabular plate areas and entire ventral surface, with the exception of the cingulum evenly covered with granules;
archeopyle apical, operculum free.
Affinities:
This species differs from C. colliveri by having dorsal reflected tabulation and from Canninginopsis denticulata by lacking ventral tabulation. The tabulation of the latter species consists of a single or double row of parasutural granules. Dorsal paratabulation of C. intermedia is defined by peritabular granules.
Canninginopsis intermedia Morgan, 1980, p.18, pl.3, figs.4–8.
Holotype: Morgan, 1980, pl.3, figs.7–8; Helby et al., 1987, figs.29E–F.
NOW Cerbia. Originally Canninginopsis, subsequently (and now) Cerbia.
Age: early Albian.
---------------------------------------------------------------------------------------------------
Original description: [Morgan, 1980, p. 18]:
Description:
Single-walled cysts with subcircular to pentagonal ambitus; distinct rounded bulges mark apex and two slightly unequal antapical horns; cingulum marked by shallow groove slightly offset at sulcus; cyst ornament of 0.5-1.0 µm diameter granules, larger, denser and more aligned in two paracingular rows and in peritabular position around the dorsal paraplates;
ventral tabulation not reflected; intratabular plate areas and entire ventral surface, with the exception of the cingulum evenly covered with granules;
archeopyle apical, operculum free.
Affinities:
This species differs from C. colliveri by having dorsal reflected tabulation and from Canninginopsis denticulata by lacking ventral tabulation. The tabulation of the latter species consists of a single or double row of parasutural granules. Dorsal paratabulation of C. intermedia is defined by peritabular granules.