Skuadinium reticulatum Riding and Helby, 2001a, p.17, figs.10A–I. Holotype: Riding and Helby, 2001a, fig.10G–H. Age: early Toarcian.

Description. Skuadinium with a strongly reticulate autophragm. The apical and antapical horns are subequally developed and have pointed distal terminations. The fenestrae are frequently longitudinally elongate and appear to be arranged in apical-antapical lineations. A prominent accumulation body is normally present in the vicinity of the paracingulum. Paratabulation indicated only by the paracingulum and parasulcus. The former is marked in most specimens by prominent smooth ridges. A consistently developed archaeopyle has not been observed, but consistent tearing along the anterior surface of the paracingulum suggests that it is possibly epicystal.

Dimensions (µm, n=25): Min. (Mean) Max.
Length: 59 (81) 99
Width: 32 (50) 63
Diameter of fenestrae: 1 (3) 8
The measured specimens are from sidewall core samples at 2385.00m and 2391.50m in Skua-6 well.

Comments. The apical and antapical horns are sometimes slightly recurved.

Comparison. The prominent reticulation characterizes Skuadinium reticulatum. It differs from S. asymmetricum in its spindle shape, and in lacking ventral inflations in the region of the paracingulum. It is similar to Scriniocassis weberi Gocht 1964 in its strongly reticulate autophragm. However, S. weberi is ovoidal in outline, has a thicker, differentiated autophragm and a consistently developed polyplacoid combination (apical/precingular) arachaeopyle (Below, 1990).

Derivation of name. From the Latin reticulatus meaning netted or net-like.
Holotype and type locality. Figs. 10G-H, CPC 35187, Skua-6 well, sidewall core sample at 2391.50m