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Spiniferites neptunii
Spiniferites neptunii (Eisenack, 1958) Duxbury, 1983; Emendations: Duxbury, 1983, p.55, as Spiniferites neptuni; Sarjeant, 1985a, p.89–90,92, as Florentinia? neptuni
Now Achomosphaera. Originally Baltisphaeridium, subsequently (and now) Achomosphaera, thirdly Achomosphaera?, fourthly Spiniferites, fifthly Florentinia?.
Lentin and Williams, 1985, retained the species in Achomosphaera Evitt, 1963.
Holotype: Eisenack, 1958, pl.26, fig.7
Locus typicus: Borehole at Feld Heide, NW Germany
Stratum typicum: Early Cretaceous
Translation Eisenack, 1958: LPP
Original description: Eisenack 1958, p. 399: Baltisphaeridium neptuni
Diagnosis: Shell with thin wall, spherical to oval, covered with few, broadly based, cylindrical to weakly conical appendices; these are thin-walled, hollow and distally usually divided into 3 (more rarely 2 or 4) strongly diverging, mostly widely diverging, pointed processes. The length of the appendices is about half the central body diameter, or slightly shorter.
Dimensions: 12 specimens: shell diameter 40-60 µm, total diameter 75-95 µm; Holotype 48 µm and 88 µm respectively.
Emended diagnosis: Duxbury, 1983, p. 55
A chorate dinoflagellate cyst species possessing a faintly thick-walled, fibro-reticulate central body. Trifurcate gonal and bifurcate parasutural processes are present and 5these may be proximally connected by low crests. Rarely, the processes may have a secondary bifurcation . The archaeopyle is single paraplate precingular (3"").
Now Achomosphaera. Originally Baltisphaeridium, subsequently (and now) Achomosphaera, thirdly Achomosphaera?, fourthly Spiniferites, fifthly Florentinia?.
Lentin and Williams, 1985, retained the species in Achomosphaera Evitt, 1963.
Holotype: Eisenack, 1958, pl.26, fig.7
Locus typicus: Borehole at Feld Heide, NW Germany
Stratum typicum: Early Cretaceous
Translation Eisenack, 1958: LPP
Original description: Eisenack 1958, p. 399: Baltisphaeridium neptuni
Diagnosis: Shell with thin wall, spherical to oval, covered with few, broadly based, cylindrical to weakly conical appendices; these are thin-walled, hollow and distally usually divided into 3 (more rarely 2 or 4) strongly diverging, mostly widely diverging, pointed processes. The length of the appendices is about half the central body diameter, or slightly shorter.
Dimensions: 12 specimens: shell diameter 40-60 µm, total diameter 75-95 µm; Holotype 48 µm and 88 µm respectively.
Emended diagnosis: Duxbury, 1983, p. 55
A chorate dinoflagellate cyst species possessing a faintly thick-walled, fibro-reticulate central body. Trifurcate gonal and bifurcate parasutural processes are present and 5these may be proximally connected by low crests. Rarely, the processes may have a secondary bifurcation . The archaeopyle is single paraplate precingular (3"").