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Reticulatosphaera actinocoronata
Reticulatosphaera actinocoronata (Benedek, 1972, p.34, pl.12, fig.13; text-fig.13) Bujak and Matsuoka, 1986, p.238. Emendation: Bujak and Matsuoka, 1986, p.238–239, as Reticulatosphaera actinocoronata
Originally Cleistosphaeridium, subsequently Areosphaeridium?, thirdly (and now) Reticulatosphaera.
Tax. sr. synonym of Reticulatosphaera stellata Matsuoka, 1983, according to Bujak and Matsuoka, 1986. Reticulatosphaera actinocoronata is therefore the correct name for the type species of Reticulatosphaera, but the nomenclatural type of the genus remains the holotype of Reticulatosphaera stellata.
Holotype: Benedek, 1972, pl. 12, fig.13; Benedek and Sarjeant, 1981, fig.10/5; text-fig.11
Paratypes: Benedek, 1972; Benedek and Sarjeant, 1981
Locus typicus: Toenisberg, Niederrhein, Germany
Stratum typicum: Late-middle Oligocene
Translation Benedek, 1972: LPP
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP
Reticulatosphaera actinocoronata (Benedek, 1972) Bujak and Matsuoka, 1986, emend. Bujak and Matsuoka, 1986. Emended by Bujak and Matsuoka (1986, p.238-239) as follows. Cysts chorate, subspherical with a finely granular surface. Intratabular processes solid, long, irregular, tubiform to cylindrical with ramifying distal extremities. An irregular network is formed by distal trabeculae connecting adjacent processes. Paratabulation gonyaulacacean: 4', 6", 0c, 6"’, 1"”, 1p, 2-3s, including an anterior sulcal. A trapezoidal precingular archeopyle is formed with a free operculum. Size: central body diameter 13-15 µm, length of processes up to branching point 12-17 µm.
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Original description: Benedek, 1972, p. 34: Cleistosphaeridium actinocoronatum
Diagnosis: The outer surface of the thin, delicate shell is smooth. The fairly constant number of about 20 processes corresponds to their uniform distribution. Also, the general habit remains uniform, the processes bifurcate into an equidistant outer ring. The bilateral ramifications can further branch widely, and are regularly set with numerous small heels.
Dimensions (microns): Shell 13/15, processes onto ramifications: 15 (12/17).
Emended diagnosis: Bujak and Matsuoka, 1986, p. 238-239
Cysts chorate, subspherical with a finely granular surface. Intratabular processes solid, irregular, tubiform to cylindrical with ramifying distal extremities. An irregular network is formed by distal trabeculae connecting adjacent processes. Paratabulation gonyaulacacean: 4', 6'', 0c, 6''', 1'''', 1p, 2-3s, including an anterior sulcal. A trapezoidal precingular archaeopyle is formed with a free operculum.
Originally Cleistosphaeridium, subsequently Areosphaeridium?, thirdly (and now) Reticulatosphaera.
Tax. sr. synonym of Reticulatosphaera stellata Matsuoka, 1983, according to Bujak and Matsuoka, 1986. Reticulatosphaera actinocoronata is therefore the correct name for the type species of Reticulatosphaera, but the nomenclatural type of the genus remains the holotype of Reticulatosphaera stellata.
Holotype: Benedek, 1972, pl. 12, fig.13; Benedek and Sarjeant, 1981, fig.10/5; text-fig.11
Paratypes: Benedek, 1972; Benedek and Sarjeant, 1981
Locus typicus: Toenisberg, Niederrhein, Germany
Stratum typicum: Late-middle Oligocene
Translation Benedek, 1972: LPP
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP
Reticulatosphaera actinocoronata (Benedek, 1972) Bujak and Matsuoka, 1986, emend. Bujak and Matsuoka, 1986. Emended by Bujak and Matsuoka (1986, p.238-239) as follows. Cysts chorate, subspherical with a finely granular surface. Intratabular processes solid, long, irregular, tubiform to cylindrical with ramifying distal extremities. An irregular network is formed by distal trabeculae connecting adjacent processes. Paratabulation gonyaulacacean: 4', 6", 0c, 6"’, 1"”, 1p, 2-3s, including an anterior sulcal. A trapezoidal precingular archeopyle is formed with a free operculum. Size: central body diameter 13-15 µm, length of processes up to branching point 12-17 µm.
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Original description: Benedek, 1972, p. 34: Cleistosphaeridium actinocoronatum
Diagnosis: The outer surface of the thin, delicate shell is smooth. The fairly constant number of about 20 processes corresponds to their uniform distribution. Also, the general habit remains uniform, the processes bifurcate into an equidistant outer ring. The bilateral ramifications can further branch widely, and are regularly set with numerous small heels.
Dimensions (microns): Shell 13/15, processes onto ramifications: 15 (12/17).
Emended diagnosis: Bujak and Matsuoka, 1986, p. 238-239
Cysts chorate, subspherical with a finely granular surface. Intratabular processes solid, irregular, tubiform to cylindrical with ramifying distal extremities. An irregular network is formed by distal trabeculae connecting adjacent processes. Paratabulation gonyaulacacean: 4', 6'', 0c, 6''', 1'''', 1p, 2-3s, including an anterior sulcal. A trapezoidal precingular archaeopyle is formed with a free operculum.