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Pareodinia ceratophora
From Fensome et al., 2019:
Pareodinia ceratophora Deflandre, 1947d, p.4, text-figs.1–3. Emendation: Gocht, 1970b, p.153–156. Holotype: Deflandre, 1947d, text-fig.1. Taxonomic junior synonyms: Cryptomeriapollenites coralliensis (Appendix A), according to Sarjeant (1962b, p.263); Kalyptea monoceras, according to Wiggins (1975, p.103) and Below (1990, p.65); Paranetrelytron strongylum, according to Wiggins (1975, p.103); Pareodinia aphelia, according to Wiggins (1975, p.103) — however, Below (1990, p.66) retained Pareodinia aphelia; Pareodinia nuda, according to Wiggins (1975,
p.103) and Kunz (1990, p.13). Gocht (1970b, p.154) considered Kalyptea jurassica and Kalyptea diceras to be possible taxonomic junior synonyms of Pareodinia ceratophora. Age: late Callovian.
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Paratypes; Deflandre, 1947 (collection A. Bigot; from France)
Locus typicus: Baltic domain
Stratum typicum: Late Callovian
Translation Deflandre, 1947: Stover and Evitt, 1978, p. 116, LPP
Translation Gocht, 1970: LPP
Translation Below, 1990: LPP
Original description: Deflandre, 1947, p. 4
Diagnosis of the genus valid for the species: Microfossil with an apparently cellulosic membrane, deprived of any trace of furrows and tabulation, general form ellipsoidal or oval, drawn out at one of the poles into a strong horn; transverse section circular. Membrane brownish, apprently smooth in the well-preserved specimens, sometimes more or less granular. Total length 65-78 µm, width about 35-38 µm.
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Emended diagnosis: Gocht, 1970, p. 154-156
Body elongate, apically streched into a single horn. Membrane smooth or weakly granulate. Girdle located beyond the middle, shallow, often entirely absent. Sometimes remainders of the precingular and postcingular plates. Antapex convex or flattened, exceptionally with antapical tip.
Archaeopyle large, intercalary, two-plated. Outer mantle ("kalyptra") consisting of fluffy organic substance.
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Emended description: Below, 1990, p. 66-67L Pareodinia ceratophora emend. var. ceratophora
Vesicle-/plate arrangement of the dinoflagellate amphiesma cop, pop, cap, 3', 2a, 6'', 7c, 6''', 2'''', as, FM, ls, rs, ps; 1' exsert, quadragonal 1a and hexagonal 2a. Growth of thecal plates ?gonyaulacoidal.
Zygote cyst proximate, acavate, cornucavate, elongate tear-shaped to ellipsoidal, streched into the long, slender, only slightly offset apical horn, antapex lobate, or with a central indentation between unequally large, flat antapical bulges, or rounded; wall consisting of thin pedium and granular luxuria, surface evenly chagrinate, with or without surrounding kalyptra, nontabulate; tabulation scheme NR PR/XPR, NR', 1a(arch), 2a(arch), NR'', NRc, NR''', NR'''', NRs; IV 1a (DDL) and VI 2a (DR); anteriorly geniculate 2'' (L), anteriorly geniculate 3'' (DDL), anteriorly linear 4'' (DDR), anteriorly geniculate 5'' (R); suture 3''/4'' dorsal;
Archaeopyle: anterior intercalary, 1a +2a
Operculum: solvate, opercular plates sectae, general opercular formula 1a(s) + 2a(s).
Dimensions (without kalyptra):
Length 61-87 µm, width 31-42 µm (ca. 40 specimens).
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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.
Pareodinia ceratophora Deflandre, 1947d, emend. Gocht, 1970b. Below (1990, p.66-67) emended Pareodinia ceratophora var ceratophora and Pareodinia ceratophora var. scopaeus. For P.ceratophora var ceratophora, he said it has an apical horn which is long, slender and only slightly differentiated. Antapex lobate or with a central depression between low antapical bulges of unequal size, or rounded. Wall of thin pedium and granulate luxuria, the surface uniformly coarsely shagreenate, with or without outer kalyptra, nonareate. With anteriorly geniculate 2", anteriorly geniculate 3", anteriorly linear 4", anteriorly geniculate 5", 3"/4" boundary dorsal; archeopyle anterior intercalary 1a + 2a; operculum solvate, opercular pieces secate, general opercular formula 1as + 2as.Size: length 65-78 µm, width 35-38 µm.
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Pareodinia ceratophora Deflandre, 1947d, p.4, text-figs.1–3. Emendation: Gocht, 1970b, p.153–156. Holotype: Deflandre, 1947d, text-fig.1. Taxonomic junior synonyms: Cryptomeriapollenites coralliensis (Appendix A), according to Sarjeant (1962b, p.263); Kalyptea monoceras, according to Wiggins (1975, p.103) and Below (1990, p.65); Paranetrelytron strongylum, according to Wiggins (1975, p.103); Pareodinia aphelia, according to Wiggins (1975, p.103) — however, Below (1990, p.66) retained Pareodinia aphelia; Pareodinia nuda, according to Wiggins (1975,
p.103) and Kunz (1990, p.13). Gocht (1970b, p.154) considered Kalyptea jurassica and Kalyptea diceras to be possible taxonomic junior synonyms of Pareodinia ceratophora. Age: late Callovian.
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Paratypes; Deflandre, 1947 (collection A. Bigot; from France)
Locus typicus: Baltic domain
Stratum typicum: Late Callovian
Translation Deflandre, 1947: Stover and Evitt, 1978, p. 116, LPP
Translation Gocht, 1970: LPP
Translation Below, 1990: LPP
Original description: Deflandre, 1947, p. 4
Diagnosis of the genus valid for the species: Microfossil with an apparently cellulosic membrane, deprived of any trace of furrows and tabulation, general form ellipsoidal or oval, drawn out at one of the poles into a strong horn; transverse section circular. Membrane brownish, apprently smooth in the well-preserved specimens, sometimes more or less granular. Total length 65-78 µm, width about 35-38 µm.
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Emended diagnosis: Gocht, 1970, p. 154-156
Body elongate, apically streched into a single horn. Membrane smooth or weakly granulate. Girdle located beyond the middle, shallow, often entirely absent. Sometimes remainders of the precingular and postcingular plates. Antapex convex or flattened, exceptionally with antapical tip.
Archaeopyle large, intercalary, two-plated. Outer mantle ("kalyptra") consisting of fluffy organic substance.
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Emended description: Below, 1990, p. 66-67L Pareodinia ceratophora emend. var. ceratophora
Vesicle-/plate arrangement of the dinoflagellate amphiesma cop, pop, cap, 3', 2a, 6'', 7c, 6''', 2'''', as, FM, ls, rs, ps; 1' exsert, quadragonal 1a and hexagonal 2a. Growth of thecal plates ?gonyaulacoidal.
Zygote cyst proximate, acavate, cornucavate, elongate tear-shaped to ellipsoidal, streched into the long, slender, only slightly offset apical horn, antapex lobate, or with a central indentation between unequally large, flat antapical bulges, or rounded; wall consisting of thin pedium and granular luxuria, surface evenly chagrinate, with or without surrounding kalyptra, nontabulate; tabulation scheme NR PR/XPR, NR', 1a(arch), 2a(arch), NR'', NRc, NR''', NR'''', NRs; IV 1a (DDL) and VI 2a (DR); anteriorly geniculate 2'' (L), anteriorly geniculate 3'' (DDL), anteriorly linear 4'' (DDR), anteriorly geniculate 5'' (R); suture 3''/4'' dorsal;
Archaeopyle: anterior intercalary, 1a +2a
Operculum: solvate, opercular plates sectae, general opercular formula 1a(s) + 2a(s).
Dimensions (without kalyptra):
Length 61-87 µm, width 31-42 µm (ca. 40 specimens).
--------------------------------------------------
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Pareodinia ceratophora Deflandre, 1947d, emend. Gocht, 1970b. Below (1990, p.66-67) emended Pareodinia ceratophora var ceratophora and Pareodinia ceratophora var. scopaeus. For P.ceratophora var ceratophora, he said it has an apical horn which is long, slender and only slightly differentiated. Antapex lobate or with a central depression between low antapical bulges of unequal size, or rounded. Wall of thin pedium and granulate luxuria, the surface uniformly coarsely shagreenate, with or without outer kalyptra, nonareate. With anteriorly geniculate 2", anteriorly geniculate 3", anteriorly linear 4", anteriorly geniculate 5", 3"/4" boundary dorsal; archeopyle anterior intercalary 1a + 2a; operculum solvate, opercular pieces secate, general opercular formula 1as + 2as.Size: length 65-78 µm, width 35-38 µm.
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