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Deflandrea speciosa
Deflandrea speciosa Alberti, 1959
NOW Cerodinium. Originally Deflandrea, subsequently Ceratiopsis (combination illegitimate), thirdly (and now) Cerodinium.
Holotype: Gocht, 1969, text-fig.3, as Deflandrea speciosa forma glabra.
Locus typicus: Mecklenburg, Germany
Stratum typicum: Late Paleocene
Translation Alberti, 1959: LPP
Translation Gocht, 1969: Geological Survey of Canada
Original description: Alberti 1959, p. 97
Shell flattened, outline elongate pentagonal. With a distally narrowing short apical horn, and two strongly diverging, tapering antapical horns. Transversal furrow slightly deepened, longitudinal furrow sometimes indicated on the hypotheca. On the periphragm denticulated ridges, which could belong to the tabulation. The capsule often positioned close to the shell. Shell membrane and capsule ornamented with small, distinct closely arranged tubercles, which also could be absent on several positions.
Additions: The species is characterised by the strong diverging of the widely separated antapical horns. A tabulation could not be recognised. A rounded-trapezium shaped archeopyle is located below the apex. The membrane of the shell is transparent; the membrane of the capsule brownish.
Gocht, 1969, p.10:
There is a not very numerous occurrence of this species in two samples from deep Early Eocene strata. The outline of the cysts corresponds largely to Alberti"s type, but the shape of the antapex varies; sometimes it is flattened, so that the boundaries of the antapical horns are obtuse-angled or rectangular.
The outer armor and inner body are of approximately equal thickness, and sometimes very fragile. The outer wall is trimmed with short spines; also the cingulum is fringed with somewhat larqer spines. Ventrally, the lower cingular margin is sharply recurved towards the antapex on both sides, demarcating a sulcal field. (Translator"s note: the author usually writes "longitudinal furrow", not "sulcus"; however, I have sometimes substituted "sulcal" where awkward English (e.g., "longitudinal-furrow field") would result.)
Most specimens have an archeopyle, sometimes sealed with an operculum. This species is obviously closely related to D. oebisfeldensis Alberti, 1959.
Occurrence: Early Eocene.
NOW Cerodinium. Originally Deflandrea, subsequently Ceratiopsis (combination illegitimate), thirdly (and now) Cerodinium.
Holotype: Gocht, 1969, text-fig.3, as Deflandrea speciosa forma glabra.
Locus typicus: Mecklenburg, Germany
Stratum typicum: Late Paleocene
Translation Alberti, 1959: LPP
Translation Gocht, 1969: Geological Survey of Canada
Original description: Alberti 1959, p. 97
Shell flattened, outline elongate pentagonal. With a distally narrowing short apical horn, and two strongly diverging, tapering antapical horns. Transversal furrow slightly deepened, longitudinal furrow sometimes indicated on the hypotheca. On the periphragm denticulated ridges, which could belong to the tabulation. The capsule often positioned close to the shell. Shell membrane and capsule ornamented with small, distinct closely arranged tubercles, which also could be absent on several positions.
Additions: The species is characterised by the strong diverging of the widely separated antapical horns. A tabulation could not be recognised. A rounded-trapezium shaped archeopyle is located below the apex. The membrane of the shell is transparent; the membrane of the capsule brownish.
Gocht, 1969, p.10:
There is a not very numerous occurrence of this species in two samples from deep Early Eocene strata. The outline of the cysts corresponds largely to Alberti"s type, but the shape of the antapex varies; sometimes it is flattened, so that the boundaries of the antapical horns are obtuse-angled or rectangular.
The outer armor and inner body are of approximately equal thickness, and sometimes very fragile. The outer wall is trimmed with short spines; also the cingulum is fringed with somewhat larqer spines. Ventrally, the lower cingular margin is sharply recurved towards the antapex on both sides, demarcating a sulcal field. (Translator"s note: the author usually writes "longitudinal furrow", not "sulcus"; however, I have sometimes substituted "sulcal" where awkward English (e.g., "longitudinal-furrow field") would result.)
Most specimens have an archeopyle, sometimes sealed with an operculum. This species is obviously closely related to D. oebisfeldensis Alberti, 1959.
Occurrence: Early Eocene.