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Protoellipsodinium seghire
Protoellipsodinium seghire Below, 1981
Holotype: Below, 1981, pl.11, figs.10a-b; Fensome et al., 1991, figs.1-2 - p.733; figs.1-2 - p.737
Paratype: Below, 1981
Locus typicus: Ravine northwest of Amalou, southwest Morocco
Stratum typicum: Hauterivian-Aptian
Translation Below, 1981: Fensome, 1991, p. 734-735
Original diagnosis: Below, 1981, p. 110
Proximate, nontabulate, ellipsoidal cyst. Hypocyst somewhat larger than epicyst. Paracingulum only rarely indicated dorsally. Parasulcus absent. Archeopyle dorsal, type P(3""). Numerous solid, peg-like appendages occur, their length reaching 1/10 to 1/15 of the diameter of the central body. They are evenly distributed over the entire body and are connected by low ridges or isolated. Membrane smooth.
Original description: Below, 1981, p. 110
The cyst is elongate-ovoidal to ellipsoidal. The poles are rounded and the apex is only rarely slightly pointed; as a result, the central body is egg-shaped. Polar protuberances absent. The archeopyle is conspicuously large and extends almost to the apical pole. The operculum corresponds to middorsal paraplate 3". Its evenly arched form shows that the outline is not influenced by the straight paraplate boundaries. Thus, an "enlarged" archeopyle is suspected. The central body is densely and evenly covered with peg-like solid processes. An arrangement parallel to the longitudinal axis of the cyst, as in Protoellipsodinium spinocristatum
Davey and Verdier 1971, or in rows delineating parasutures, was not observed. The spines attain a length of 1.5 - 2 µm, i.e. 1/10 to 1/15 of the central body diameter. The processes have circular, thickened bases and are isolated or connected in pairs or irregularly in chains by frequently interrupted, distally rounded ridges. Occasionally a narrow equatorial band on the dorsal surface is devoid of appendages; this has been interpreted as an indication of a paracingulum. The autophragm is smooth, but very finely reticulate in some specimens.
Holotype: Below, 1981, pl.11, figs.10a-b; Fensome et al., 1991, figs.1-2 - p.733; figs.1-2 - p.737
Paratype: Below, 1981
Locus typicus: Ravine northwest of Amalou, southwest Morocco
Stratum typicum: Hauterivian-Aptian
Translation Below, 1981: Fensome, 1991, p. 734-735
Original diagnosis: Below, 1981, p. 110
Proximate, nontabulate, ellipsoidal cyst. Hypocyst somewhat larger than epicyst. Paracingulum only rarely indicated dorsally. Parasulcus absent. Archeopyle dorsal, type P(3""). Numerous solid, peg-like appendages occur, their length reaching 1/10 to 1/15 of the diameter of the central body. They are evenly distributed over the entire body and are connected by low ridges or isolated. Membrane smooth.
Original description: Below, 1981, p. 110
The cyst is elongate-ovoidal to ellipsoidal. The poles are rounded and the apex is only rarely slightly pointed; as a result, the central body is egg-shaped. Polar protuberances absent. The archeopyle is conspicuously large and extends almost to the apical pole. The operculum corresponds to middorsal paraplate 3". Its evenly arched form shows that the outline is not influenced by the straight paraplate boundaries. Thus, an "enlarged" archeopyle is suspected. The central body is densely and evenly covered with peg-like solid processes. An arrangement parallel to the longitudinal axis of the cyst, as in Protoellipsodinium spinocristatum
Davey and Verdier 1971, or in rows delineating parasutures, was not observed. The spines attain a length of 1.5 - 2 µm, i.e. 1/10 to 1/15 of the central body diameter. The processes have circular, thickened bases and are isolated or connected in pairs or irregularly in chains by frequently interrupted, distally rounded ridges. Occasionally a narrow equatorial band on the dorsal surface is devoid of appendages; this has been interpreted as an indication of a paracingulum. The autophragm is smooth, but very finely reticulate in some specimens.