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Hystrichogonyaulax coreoides
Hystrichogonyaulax coreoides Benedek, 1972, p.20, pl.9, figs.4a–c. Emendation: Benedek and Sarjeant, 1981, p.328–330, as Phthanoperidinium coreoides.
NOW Phthanoperidinium. Originally Hystrichogonyaulax, subsequently (and now) Phthanoperidinium.
Taxonomic senior synonym: Peridinium (now Phthanoperidinium) comatum, according to Stover and Evitt (1978, p.118) — however, Benedek and Sarjeant (1981, p.328–330) retained Phthanoperidinium coreoides.
Taxonomic junior synonym Phthanoperidinium tritonium, according to Fensome et al. (2009, p.54–55), which species had previously been considered a taxonomic junior synonym of Phthanoperidinium comatum by Bujak in Bujak et al. (1980, p.72).
Holotype: Benedek, 1972, pl.9, figs.4a–c; Benedek and Sarjeant, 1981, fig.3, nos.2,4; fig.5.
Paratype: Benedek, 1972
Locus typicus: T÷nisberg, Lower Rhine Embayment, Germany
Stratum typicum: Middle Oligocene
Translation Benedek, 1972: LPP
Original dignosis: Benedek, 1972, p.20
A species of Hystrichgonyaulax with following tabulation formula: 4", ?1a, 6"", 6c, 5-6""", 1p, 0-1(sic), 1"""". The egg-shaped, slightly polyedrical theca is pointed apical. Sutures thickened and ornamented with thin thorns. Transverse furrow slightly indented and spiral. Longitudinal furrow clearly delimited.
Original description: Benedek, 1972, p.20
The small theca is tabulate and has a weakly granulate surface. Sutures better developed with irregular distributed thin, solid thorns. In the apical and antapical regions longer (10 Ám/12 Ám), distally furcate thorns are developed. Archaeopyle results from the loss of plate 2a or the upper part of plate 3"""(sic). Epitheca elongated, egg-shaped and seperated from the hypotheca by a weakly indented cingulum consisting of 5-6 plates. Hypotheca smaller and more rounded than epitheca.
Dimensions: Capsule length 36-38 Ám, capsule breadth c. 26 Ám (10 specimens).
NOW Phthanoperidinium. Originally Hystrichogonyaulax, subsequently (and now) Phthanoperidinium.
Taxonomic senior synonym: Peridinium (now Phthanoperidinium) comatum, according to Stover and Evitt (1978, p.118) — however, Benedek and Sarjeant (1981, p.328–330) retained Phthanoperidinium coreoides.
Taxonomic junior synonym Phthanoperidinium tritonium, according to Fensome et al. (2009, p.54–55), which species had previously been considered a taxonomic junior synonym of Phthanoperidinium comatum by Bujak in Bujak et al. (1980, p.72).
Holotype: Benedek, 1972, pl.9, figs.4a–c; Benedek and Sarjeant, 1981, fig.3, nos.2,4; fig.5.
Paratype: Benedek, 1972
Locus typicus: T÷nisberg, Lower Rhine Embayment, Germany
Stratum typicum: Middle Oligocene
Translation Benedek, 1972: LPP
Original dignosis: Benedek, 1972, p.20
A species of Hystrichgonyaulax with following tabulation formula: 4", ?1a, 6"", 6c, 5-6""", 1p, 0-1(sic), 1"""". The egg-shaped, slightly polyedrical theca is pointed apical. Sutures thickened and ornamented with thin thorns. Transverse furrow slightly indented and spiral. Longitudinal furrow clearly delimited.
Original description: Benedek, 1972, p.20
The small theca is tabulate and has a weakly granulate surface. Sutures better developed with irregular distributed thin, solid thorns. In the apical and antapical regions longer (10 Ám/12 Ám), distally furcate thorns are developed. Archaeopyle results from the loss of plate 2a or the upper part of plate 3"""(sic). Epitheca elongated, egg-shaped and seperated from the hypotheca by a weakly indented cingulum consisting of 5-6 plates. Hypotheca smaller and more rounded than epitheca.
Dimensions: Capsule length 36-38 Ám, capsule breadth c. 26 Ám (10 specimens).