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Burtonia
From Fensome et al., 2019:
"Burtonia", Beju, 1983, p.106.
Name illegitimate -- senior homonym: Burtonia Brown, 1811.
Substitute name: Bejuia.
Taxonomic senior synonym: Atopodinium, according to Masure, 1991, p.64.
Type: Beju, 1983, text-figs.3A–B,4A–B, as Burtonia polygonalis.
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Original description: [Beju, 1983]:
Diagnosis:
Proximate dinocysts with subpolygonal outline. Apex flattened to weakly protuberant, displaced on the ventral side; antapex consisting of a prominent protuberance. Cyst single-walled (autophragm). Paratabulation incompletely indicated by low parasutural ridges, well expressed on the hypocyst, where it consists of six postcingular paraplates; an additional paraplate ("shield") is transversely arranged on the ventral antapical margin of the hypocyst. Epicystal paratabulation indeterminable under the light microscope. Paracingulum discernible, especially on the ventral side, helicoidal, displaced in apical direction on the dorsal side. Epicyst considerably smaller than the hypocyst, ventrally displaced. Archeopyle of uncertain type.
"Burtonia", Beju, 1983, p.106.
Name illegitimate -- senior homonym: Burtonia Brown, 1811.
Substitute name: Bejuia.
Taxonomic senior synonym: Atopodinium, according to Masure, 1991, p.64.
Type: Beju, 1983, text-figs.3A–B,4A–B, as Burtonia polygonalis.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Beju, 1983]:
Diagnosis:
Proximate dinocysts with subpolygonal outline. Apex flattened to weakly protuberant, displaced on the ventral side; antapex consisting of a prominent protuberance. Cyst single-walled (autophragm). Paratabulation incompletely indicated by low parasutural ridges, well expressed on the hypocyst, where it consists of six postcingular paraplates; an additional paraplate ("shield") is transversely arranged on the ventral antapical margin of the hypocyst. Epicystal paratabulation indeterminable under the light microscope. Paracingulum discernible, especially on the ventral side, helicoidal, displaced in apical direction on the dorsal side. Epicyst considerably smaller than the hypocyst, ventrally displaced. Archeopyle of uncertain type.