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Eyachia priscus
Eyachia prisca Gocht, 1979, p.308,310,312–317, figs.1a–d,2a–b,3a–e,4a–d,5–6,7a–d,8a–b,9a–c,10. Emendation: Below, 1990, p.32, as Eyachia priscus.
NOW Scriniocassis. Originally Eyachia, subsequently (and now) Scriniocassis.
Holotype: Gocht, 1979, figs.9a–c; Fensome et al., 1995, figs.1–2 — p.1687.
Locus typicus: Well 1001, Dottenhausen near Balingen, S Germany
Stratum typicum: Early Aalenian
Translation Gocht, 1979: LPP
Original description: Gocht 1979, p. 308
Diagnosis: Central body longer than wide, dorso-ventrally weakly flattened. Epicyst shorter, dome-shaped, provided with a small apical protuberance. Hypocyst larger, polygonal, with strongly expressed angles. Largest width in height of the posterior girdle margin. Girdle offset to the left by its own width. Parasutural pattern consists of narrow, deepened lines, which are partly bordered by pandasutural knot-like ledges (reflected growth zones). The joined apical plates are pentagonal.The apical protuberance (with a small preapical plate?) angles between 1", 2", and 4". Middorsal plate 3" is larger than the others. Precingular plates rounded to trapezoidal. Girdleplates tetra- to pentagonal. Postcingular plates large, extending from girdle up to the antapex, ca. tetra- to pentagonal. Two almost equidiametrical plates, 1p, (left-ventrally) and 1"""" (right-dorsally) form the antapical region. Sulcus inarticulate, bordered by an arched margin with the pre- and postcingulars. Deepening (flagellar scar) between girdle ends. Formula: 1pr?, 4", 5"", 6c, 6""", 1p, 1"""". Wall bilayered; the intermediate cavity (pericoel) is bridged by numerous radial fibres. Operculum formed either by the loss of the plates 2"" and 3"", or more often (or always) by the loss of single (all?) apical plates (Type 4A+2P after Evitt).
NOW Scriniocassis. Originally Eyachia, subsequently (and now) Scriniocassis.
Holotype: Gocht, 1979, figs.9a–c; Fensome et al., 1995, figs.1–2 — p.1687.
Locus typicus: Well 1001, Dottenhausen near Balingen, S Germany
Stratum typicum: Early Aalenian
Translation Gocht, 1979: LPP
Original description: Gocht 1979, p. 308
Diagnosis: Central body longer than wide, dorso-ventrally weakly flattened. Epicyst shorter, dome-shaped, provided with a small apical protuberance. Hypocyst larger, polygonal, with strongly expressed angles. Largest width in height of the posterior girdle margin. Girdle offset to the left by its own width. Parasutural pattern consists of narrow, deepened lines, which are partly bordered by pandasutural knot-like ledges (reflected growth zones). The joined apical plates are pentagonal.The apical protuberance (with a small preapical plate?) angles between 1", 2", and 4". Middorsal plate 3" is larger than the others. Precingular plates rounded to trapezoidal. Girdleplates tetra- to pentagonal. Postcingular plates large, extending from girdle up to the antapex, ca. tetra- to pentagonal. Two almost equidiametrical plates, 1p, (left-ventrally) and 1"""" (right-dorsally) form the antapical region. Sulcus inarticulate, bordered by an arched margin with the pre- and postcingulars. Deepening (flagellar scar) between girdle ends. Formula: 1pr?, 4", 5"", 6c, 6""", 1p, 1"""". Wall bilayered; the intermediate cavity (pericoel) is bridged by numerous radial fibres. Operculum formed either by the loss of the plates 2"" and 3"", or more often (or always) by the loss of single (all?) apical plates (Type 4A+2P after Evitt).