Back
Facetodinium
From Williams et al., 2017:
[Facetodinium, Bjaerke, 1980, p. 62, 69.
Tax. sr. syn.: Reutlingia, according to Below (1987a, p.133) — however, Lentin and Williams (1989, p.135) retained Facetodinium as a junior synonym of Susadinium.
Type species: Facetodinium faustum, Bjaerke, 1980 (pl.2, figs.1–3)]
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Bjaerke, 1980]:
Diagnosis:
Proximate dinoflagellate cysts. Cyst wall formed by autophragm only.
Archaeopyle formed by one middorsal intercalary paraplate or middorsal intercalary and the neighboring intercalaries (Types I or 3I). Paratabulation reflected by the presence of intratabular ornamentation or inflations giving the paratabulation formula 5`, 3a, 7``, 5```, 2````. Cingular paraplates may be indicated by faint parasutures. Middorsal intercalary paralate hexagonal with anterior and posterior angulations. Cyst outline subcircular, pentagonal, elongated. Outline may be further modified by intratabular inflations and paracingular constriction. With or without apical and lateral horns, antapical horns not developed. Cyst surface smooth or ornamented with various types of intratabular processes. Paraplate 1```` may be smooth or show ornamentation different from the rest of the cyst. Paracingulum shallow to deeply constricted, ornamentation reduced or absent. Parasulcus may be marked by thinning of cyst wall and reduction or absence of ornamentation.
Affinities:
Parvocysta resembles Facetodinium (Bjaerke 1980) but lacks the intratabular ornamentation seen in that genus. Size range, nature of autophragm and the outline and position of archaeopyle suggest that the two genera are closely related.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Stover and Williams, 1987, p. 97:
Remarks:
We agree with Lentin and Williams 1985 (p. 133) that Facetodinium and Susadinium are congeneric, with the latter having priority (February 1980 versus October 1980).
[Facetodinium, Bjaerke, 1980, p. 62, 69.
Tax. sr. syn.: Reutlingia, according to Below (1987a, p.133) — however, Lentin and Williams (1989, p.135) retained Facetodinium as a junior synonym of Susadinium.
Type species: Facetodinium faustum, Bjaerke, 1980 (pl.2, figs.1–3)]
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Bjaerke, 1980]:
Diagnosis:
Proximate dinoflagellate cysts. Cyst wall formed by autophragm only.
Archaeopyle formed by one middorsal intercalary paraplate or middorsal intercalary and the neighboring intercalaries (Types I or 3I). Paratabulation reflected by the presence of intratabular ornamentation or inflations giving the paratabulation formula 5`, 3a, 7``, 5```, 2````. Cingular paraplates may be indicated by faint parasutures. Middorsal intercalary paralate hexagonal with anterior and posterior angulations. Cyst outline subcircular, pentagonal, elongated. Outline may be further modified by intratabular inflations and paracingular constriction. With or without apical and lateral horns, antapical horns not developed. Cyst surface smooth or ornamented with various types of intratabular processes. Paraplate 1```` may be smooth or show ornamentation different from the rest of the cyst. Paracingulum shallow to deeply constricted, ornamentation reduced or absent. Parasulcus may be marked by thinning of cyst wall and reduction or absence of ornamentation.
Affinities:
Parvocysta resembles Facetodinium (Bjaerke 1980) but lacks the intratabular ornamentation seen in that genus. Size range, nature of autophragm and the outline and position of archaeopyle suggest that the two genera are closely related.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Stover and Williams, 1987, p. 97:
Remarks:
We agree with Lentin and Williams 1985 (p. 133) that Facetodinium and Susadinium are congeneric, with the latter having priority (February 1980 versus October 1980).