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Archeotectatum
From Fensome et al., 2019:
Archeotectatum, Habib, 1972, p.375–376.
Taxonomic senior synonym: Apteodinium, according to Stover and Evitt (1978, p.142) -- however, Lentin and Williams (1989, p.24) retained Archeotectatum.
Type: Habib, 1972, pl.5, fig.3, as Archeotectatum sarjeantii.
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Original description: [Habib, 1972]:
Diagnosis:
Proximate dinoflagellate cyst. Outline polygonal in lateral view, with an apical horn ant two rounded antapical horns; essentially oval in dorsoventral compression. Wall is thick and spongy. Archaeopyle precingular. Untabulated. Ornamentation variable.
Affinities:
Archeotectadinium is similar to Tectatodinium Wall with respect to the thick wall and precingular archeopyle. It is distinguished by the occurrence of apical and antapical horns. The genus closely resembles Apteodinium Eisenack but is distinguished by its thick tectum-like wall.
Archeotectatum, Habib, 1972, p.375–376.
Taxonomic senior synonym: Apteodinium, according to Stover and Evitt (1978, p.142) -- however, Lentin and Williams (1989, p.24) retained Archeotectatum.
Type: Habib, 1972, pl.5, fig.3, as Archeotectatum sarjeantii.
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Original description: [Habib, 1972]:
Diagnosis:
Proximate dinoflagellate cyst. Outline polygonal in lateral view, with an apical horn ant two rounded antapical horns; essentially oval in dorsoventral compression. Wall is thick and spongy. Archaeopyle precingular. Untabulated. Ornamentation variable.
Affinities:
Archeotectadinium is similar to Tectatodinium Wall with respect to the thick wall and precingular archeopyle. It is distinguished by the occurrence of apical and antapical horns. The genus closely resembles Apteodinium Eisenack but is distinguished by its thick tectum-like wall.