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Tanyosphaeridium regulare
Tanyosphaeridium regulare Davey and Williams, 1966
Holotype: Davey and Williams, 1966b, pl.3, fig.4; Bujak et al., 1980, pl.8, figs.3,6; Fauconnier and Masure, 2004, pl.79, figs.4–5.
Locus typicus: London Clay, Isle of Wight, England
Stratum typicum: Early Eocene
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G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Tanyosphaeridium regulare Davey and Williams, 1966b. Diagnosis from Davey and Williams (1966b, p.99-100), elongate central body with granular surface, bearing numerous tubular, usually curved processes. Processes terminating with somewhat serrate margin. The central body bears granules and some large tubercles. The processes have relatively broad bases, up to 4 µm wide and taper distally being 1-1.5 µm wide for most of their length. The processes are arranged in circular series around the central body, indicating a reflected tabulation. There are two or more rarely three processes on each plate. Size: length of central body 30-44 µm, width 21-24 µm, process length 12-19 µm.
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Original diagnosis: Davey and Williams, 1966, p. 99
Elongate central body with granular surface, bearing numerous tubular, usually curved processes. Processes terminating with somewhat serrate margin.
Dimensions: Holotype: length of central body 36.5 µm, breadth of central body 23.5 µm, length of processes 14-19 µm, number of processes approximately 65. Range: length of central body 30-44 µm, breadth of central body 21-24 µm, length of processes 12-19 µm.
Original description: Davey and Williams, 1966, p. 100
The periphragm of the central body is granular and bears a number of quite large tubercles. The periphragm of the processes is smooth. The processes have relatively broad bases, up to 4 µm wide and taper distally being 1-1.5 µm wide for most of their length. At their distal extremities they widen slightly and have a somewhat serrate margin. The processes are arranged in circular series around the central body, indicating a reflected dinoflagellate tabulation. Two or, more rarely, three processes are present for each plate area.
Affinities:
Davey and Williams, 1966, p. 100: The distinctive elongate nature of the central body of T. regulare is typical of this genus. T. regulare differs from T. variecalamum in having more processes, and from T. isocalamus comb. nov. in having slenderer processes with more complex terminations.
Holotype: Davey and Williams, 1966b, pl.3, fig.4; Bujak et al., 1980, pl.8, figs.3,6; Fauconnier and Masure, 2004, pl.79, figs.4–5.
Locus typicus: London Clay, Isle of Wight, England
Stratum typicum: Early Eocene
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G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Tanyosphaeridium regulare Davey and Williams, 1966b. Diagnosis from Davey and Williams (1966b, p.99-100), elongate central body with granular surface, bearing numerous tubular, usually curved processes. Processes terminating with somewhat serrate margin. The central body bears granules and some large tubercles. The processes have relatively broad bases, up to 4 µm wide and taper distally being 1-1.5 µm wide for most of their length. The processes are arranged in circular series around the central body, indicating a reflected tabulation. There are two or more rarely three processes on each plate. Size: length of central body 30-44 µm, width 21-24 µm, process length 12-19 µm.
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Original diagnosis: Davey and Williams, 1966, p. 99
Elongate central body with granular surface, bearing numerous tubular, usually curved processes. Processes terminating with somewhat serrate margin.
Dimensions: Holotype: length of central body 36.5 µm, breadth of central body 23.5 µm, length of processes 14-19 µm, number of processes approximately 65. Range: length of central body 30-44 µm, breadth of central body 21-24 µm, length of processes 12-19 µm.
Original description: Davey and Williams, 1966, p. 100
The periphragm of the central body is granular and bears a number of quite large tubercles. The periphragm of the processes is smooth. The processes have relatively broad bases, up to 4 µm wide and taper distally being 1-1.5 µm wide for most of their length. At their distal extremities they widen slightly and have a somewhat serrate margin. The processes are arranged in circular series around the central body, indicating a reflected dinoflagellate tabulation. Two or, more rarely, three processes are present for each plate area.
Affinities:
Davey and Williams, 1966, p. 100: The distinctive elongate nature of the central body of T. regulare is typical of this genus. T. regulare differs from T. variecalamum in having more processes, and from T. isocalamus comb. nov. in having slenderer processes with more complex terminations.