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Raetiaedinium evittigratia
Raetiaedinium evittigratia Kirsch, 1991
Holotype: Kirsch, 1991, pl.28, fig.2-4
Paratype: Kirsch, 1991
Locus typicus: Marienstein, Oberbayern, Germany
Stratum typicum: Middle Campanian
Translation Kirsch, 1991: LPP
Original diagnosis: Kirsch, 1991, p. 126
Skolochorate cyst with a subspheroidal to spheroidal, smooth central body and broad, tubiform and simple, slender process types. The processes are intratabular and formed by the periphragm, which may smooth or striate. Archaeopyle precingular, (Type 2P) with a secate and solvate operculum.
Original description: Kirsch, 1991, p. 126
The skolochorate cyst is characterized by the subsphaerical to sphaerical, smooth central body and the two different process types. The smooth or striate periphragm develops intratabular processes. The pre- and postcingular, tubiforme to saccate processes are hollow, opened distally, striate and can be folded at the margins. The distal margin is slightly thickened, denticulate and sometimes with small spines. Processes oval to circulat in equatorial cross-section and widened at the base.
The process diameter is towards the distal end constant or the processes are slightly pointed. The processes on paraplates 6"", 1""" and 2""" are slightly different.
Those processes are thin, widened at the base, pointed, usually hollow, sometimes solid which are than widened at the top. The margin is denticulate, the surface striate or smooth. The same process-type appears in the apical-, antapical-, cingular- and sulcal region. Processes can be connected by low ridges. The surface of the central body is smooth and slightly thicker than the delicate periphragm. The gonyaulacoid tabulation is: 4", 6"", 6c, 6""", 1p, 1"""", 5s. The archaeopyle is characterized by the loss of two precingular paraplates (3"", 4""). The operculum is secate.
Affinities:
Kirsch, 1991, p. 126: Raetiaedinium evittigratia differs from species of the genus Pervosphaeridium in the development of and arrangement of processes. In Raetiaedinium truncigerum the endophragm is granulate.
Holotype: Kirsch, 1991, pl.28, fig.2-4
Paratype: Kirsch, 1991
Locus typicus: Marienstein, Oberbayern, Germany
Stratum typicum: Middle Campanian
Translation Kirsch, 1991: LPP
Original diagnosis: Kirsch, 1991, p. 126
Skolochorate cyst with a subspheroidal to spheroidal, smooth central body and broad, tubiform and simple, slender process types. The processes are intratabular and formed by the periphragm, which may smooth or striate. Archaeopyle precingular, (Type 2P) with a secate and solvate operculum.
Original description: Kirsch, 1991, p. 126
The skolochorate cyst is characterized by the subsphaerical to sphaerical, smooth central body and the two different process types. The smooth or striate periphragm develops intratabular processes. The pre- and postcingular, tubiforme to saccate processes are hollow, opened distally, striate and can be folded at the margins. The distal margin is slightly thickened, denticulate and sometimes with small spines. Processes oval to circulat in equatorial cross-section and widened at the base.
The process diameter is towards the distal end constant or the processes are slightly pointed. The processes on paraplates 6"", 1""" and 2""" are slightly different.
Those processes are thin, widened at the base, pointed, usually hollow, sometimes solid which are than widened at the top. The margin is denticulate, the surface striate or smooth. The same process-type appears in the apical-, antapical-, cingular- and sulcal region. Processes can be connected by low ridges. The surface of the central body is smooth and slightly thicker than the delicate periphragm. The gonyaulacoid tabulation is: 4", 6"", 6c, 6""", 1p, 1"""", 5s. The archaeopyle is characterized by the loss of two precingular paraplates (3"", 4""). The operculum is secate.
Affinities:
Kirsch, 1991, p. 126: Raetiaedinium evittigratia differs from species of the genus Pervosphaeridium in the development of and arrangement of processes. In Raetiaedinium truncigerum the endophragm is granulate.