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Lanternosphaeridium
From Williams et al., 2017:
[Lanternosphaeridium, Morgenroth, 1966a, p. 37; Emendation: Stover and Evitt, 1978, p. 168-169
Tax. jun. syn.: Amphorosphaeridium, according to Norvick (1976, p.50) — however, Stover and Evitt (1978, p.169) retained Amphorosphaeridium.
Type species: Laternosphaeridium lanosum, Morgenroth, 1966a (pl.10, fig.10)]
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Original description: [Morgenroth, 1966]: (Translation: Stover and Evitt, 1978, p. 168):
Description:
The ovoidal capsule consists of two layers of which the inner layer is smooth, the outer one is fibrous. The capsule exhibits a distinct polarity in the longitudinal direction, that comes about through small protrusions or even through particularly enlarged processes. The appendages are formed from the fibres of the outer layer.
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Emended description:
Stover and Evitt, 1978:
Synopsis:
Cysts ellipsoidal; body fibrous and surrounded by a radially disposed, densely fibrous to loosely filamentous sheath, whose outer margin is even or moderately incised or has spinelike projections; paratabulation indicated by precingular, Type P, archeopyle only.
Description:
Shape: Body ellipsoidal.
Wall relationships: Autophragm surrounded by a densely fibrous to loosely filamentous structure.
Wall features: No parasutural features. Autophragm fibrous, not sharply differentiated from surrounding structure; latter consists of radiating, complexly interwoven, densely fibrous to loosely filamentous strands, which form a sheath around the autophragm. Strands relatively long and may be slightly longer at the poles than elsewhere, owing to the presence of slender, occasionally solid protrusions of the autophragm.
Paratabulation: Indicated by archeopyle only.
Archeopyle: Precingular, Type P (3`` only); operculum free.
Paracingulum: Not indicated.
Parasulcus: Not indicated.
Size: Intermediate to large.
Affinities:
Lanternosphaeridium differs from Turbiosphaera in having a fibrous sheath surrounding the autophragm, rather than more or less distinct, relatively wide fibrous processes.
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Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Lanternosphaeridium Morgenroth, 1966a, emend. Stover and Evitt, 1978. According to Stover and Evitt (1978, p.168), Lanternosphaeridium is ellipsoidal with a fibrous wall and surrounded by radially disposed, densely fibrous to loosely filamentous sheath, whose outer margin is even or moderately incised or has spinelike projections. Paratabulation indicated by precingular type P archeopyle.
[Lanternosphaeridium, Morgenroth, 1966a, p. 37; Emendation: Stover and Evitt, 1978, p. 168-169
Tax. jun. syn.: Amphorosphaeridium, according to Norvick (1976, p.50) — however, Stover and Evitt (1978, p.169) retained Amphorosphaeridium.
Type species: Laternosphaeridium lanosum, Morgenroth, 1966a (pl.10, fig.10)]
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Original description: [Morgenroth, 1966]: (Translation: Stover and Evitt, 1978, p. 168):
Description:
The ovoidal capsule consists of two layers of which the inner layer is smooth, the outer one is fibrous. The capsule exhibits a distinct polarity in the longitudinal direction, that comes about through small protrusions or even through particularly enlarged processes. The appendages are formed from the fibres of the outer layer.
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Emended description:
Stover and Evitt, 1978:
Synopsis:
Cysts ellipsoidal; body fibrous and surrounded by a radially disposed, densely fibrous to loosely filamentous sheath, whose outer margin is even or moderately incised or has spinelike projections; paratabulation indicated by precingular, Type P, archeopyle only.
Description:
Shape: Body ellipsoidal.
Wall relationships: Autophragm surrounded by a densely fibrous to loosely filamentous structure.
Wall features: No parasutural features. Autophragm fibrous, not sharply differentiated from surrounding structure; latter consists of radiating, complexly interwoven, densely fibrous to loosely filamentous strands, which form a sheath around the autophragm. Strands relatively long and may be slightly longer at the poles than elsewhere, owing to the presence of slender, occasionally solid protrusions of the autophragm.
Paratabulation: Indicated by archeopyle only.
Archeopyle: Precingular, Type P (3`` only); operculum free.
Paracingulum: Not indicated.
Parasulcus: Not indicated.
Size: Intermediate to large.
Affinities:
Lanternosphaeridium differs from Turbiosphaera in having a fibrous sheath surrounding the autophragm, rather than more or less distinct, relatively wide fibrous processes.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Lanternosphaeridium Morgenroth, 1966a, emend. Stover and Evitt, 1978. According to Stover and Evitt (1978, p.168), Lanternosphaeridium is ellipsoidal with a fibrous wall and surrounded by radially disposed, densely fibrous to loosely filamentous sheath, whose outer margin is even or moderately incised or has spinelike projections. Paratabulation indicated by precingular type P archeopyle.