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Deflandrea phosphoritica
Deflandrea phosphoritica Eisenack, 1938b, p.187; text-fig.6.
Taxonomic junior synonyms: Deflandrea granulosa, according to Stover (1974, p.177); Deflandrea menendezii, according to Lentin and Williams (1976, p.42); Deflandrea heterophlycta forma pusulosa, according to Lentin and Williams (1976, p.41).
Holotype: Eisenack, 1938b, text-fig.6; Eisenack, 1954b, pl.9, fig.11 (not pl.9, fig.8 as indicated in Eisenack, 1954b, caption to pl.9, fig.8 - p.91).
Locus typicus: Samland, Russia
Age: Late Eocene-Early Oligocene.
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G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Deflandrea phosphoritica Eisenack, 1938b. Variables in this species include the outline of the pericyst, size of endocyst and its relation to the pericyst, and the clarity and amount of ornamentation. The most constant feature is the lati-deltaform archeopyle, with the perioperculum and endooperculum being connected posteriorly. Specimens most similar to the type material are bicavate or circumcavate with relatively small endocysts; the epicysts are triangular in outline, and the hypocysts are widest a short distance below the cingulum, then they narrow posteriorly and form the two antapical horns separated by a medial posterior concavity. Size: pericyst length 95-128 µm, width 75-100 µm. Can be up to 152 by 84 µm.
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Original description: Eisenack 1938, p. 187
Diagnosis: Body slightly flattened; in outline an elongated bilateral symmetrical pentagon, with a convex antapical side. Thus an apical and two nearly equal antapical horns are formed; two lateral horns are obtuse-angled and indented at the top. The shell is transparent, without tabulation; ventrally with wide, slightly deepened lateral- (girdle-) fold, which is equivalent to the lateral furrow, just beneath the equator. Dorsally a flagellar pore is present between the antapical horns. A rounded inner capsule, without an apical cover, is present.
Taxonomic junior synonyms: Deflandrea granulosa, according to Stover (1974, p.177); Deflandrea menendezii, according to Lentin and Williams (1976, p.42); Deflandrea heterophlycta forma pusulosa, according to Lentin and Williams (1976, p.41).
Holotype: Eisenack, 1938b, text-fig.6; Eisenack, 1954b, pl.9, fig.11 (not pl.9, fig.8 as indicated in Eisenack, 1954b, caption to pl.9, fig.8 - p.91).
Locus typicus: Samland, Russia
Age: Late Eocene-Early Oligocene.
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G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Deflandrea phosphoritica Eisenack, 1938b. Variables in this species include the outline of the pericyst, size of endocyst and its relation to the pericyst, and the clarity and amount of ornamentation. The most constant feature is the lati-deltaform archeopyle, with the perioperculum and endooperculum being connected posteriorly. Specimens most similar to the type material are bicavate or circumcavate with relatively small endocysts; the epicysts are triangular in outline, and the hypocysts are widest a short distance below the cingulum, then they narrow posteriorly and form the two antapical horns separated by a medial posterior concavity. Size: pericyst length 95-128 µm, width 75-100 µm. Can be up to 152 by 84 µm.
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Original description: Eisenack 1938, p. 187
Diagnosis: Body slightly flattened; in outline an elongated bilateral symmetrical pentagon, with a convex antapical side. Thus an apical and two nearly equal antapical horns are formed; two lateral horns are obtuse-angled and indented at the top. The shell is transparent, without tabulation; ventrally with wide, slightly deepened lateral- (girdle-) fold, which is equivalent to the lateral furrow, just beneath the equator. Dorsally a flagellar pore is present between the antapical horns. A rounded inner capsule, without an apical cover, is present.