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Evansia barentsensis
From Fensome et al., 2019:
Evansia barentsensis barentsensis (Smelror, 1988a, p.296, pl.3, figs.4–5; text-fig.11) Below, 1990, p.72. Holotype: Smelror, 1988a, pl.3, fig.5. Originally Pareodinia, subsequently (and now) Evansia. Age: early Callovian–early Oxfordian.
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Original description, Smelror 1988a:
Type species Pareodinia ceratophora Deflandre 1947 Pareodinia barentsensis n. sp. (Plate III, 4, 5; Fig.ll)
Description: Dinoflagellate cysts, characteristically pareodinioid ovoidal to ellipsoidal in outline, with a broadly rounded antapex and apex drawn out into a distinct horn. The cyst wall is single layered, with verrucate ornament grouped in characteristic fields or appearing more randomly spaced on the otherwise smooth autophragm. The paracingulum is expressed as a distinct transverse band lacking ornamentation. In the examined material, no similar evidence of the parasulcus was observed. The archaeopyle is intercalary, type 3I, the first and third lateral opercular paraplates are early equal in size, the second, central,paraplate is somewhat larger.
Dimensions: Length (including apical horn) 49-55 µm, width 39-46 µm, (11 specimens measured). Holotype: Length 54 µm, width 42 µm. Etymology: From the Barents Sea. Holotype: S-14/37-1: 040/3. Plate III, 5. Paratype: S-14/38-1: T55/0. Plate III, 4. Type stratum and locality: Kong Karls Land, Hårfagrehaugen section, Retziusfjellet Member,
4.4 m above base.
Occurence: Hhrfagrehaugen section, Retziusfjellet Member 4.4-32.4 m above base (Lower Callovian-Lower Oxfordian).
Remarks: Pareodinia barentsensis n. sp. differs from Pareodinia wigginsii n. sp, and Pareodinia sp. C of Wiggins (1975, pl.2, fig.12) in having ornament grouped in characteristic fields and a clearly expressed paracingulum.
Evansia barentsensis barentsensis (Smelror, 1988a, p.296, pl.3, figs.4–5; text-fig.11) Below, 1990, p.72. Holotype: Smelror, 1988a, pl.3, fig.5. Originally Pareodinia, subsequently (and now) Evansia. Age: early Callovian–early Oxfordian.
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Original description, Smelror 1988a:
Type species Pareodinia ceratophora Deflandre 1947 Pareodinia barentsensis n. sp. (Plate III, 4, 5; Fig.ll)
Description: Dinoflagellate cysts, characteristically pareodinioid ovoidal to ellipsoidal in outline, with a broadly rounded antapex and apex drawn out into a distinct horn. The cyst wall is single layered, with verrucate ornament grouped in characteristic fields or appearing more randomly spaced on the otherwise smooth autophragm. The paracingulum is expressed as a distinct transverse band lacking ornamentation. In the examined material, no similar evidence of the parasulcus was observed. The archaeopyle is intercalary, type 3I, the first and third lateral opercular paraplates are early equal in size, the second, central,paraplate is somewhat larger.
Dimensions: Length (including apical horn) 49-55 µm, width 39-46 µm, (11 specimens measured). Holotype: Length 54 µm, width 42 µm. Etymology: From the Barents Sea. Holotype: S-14/37-1: 040/3. Plate III, 5. Paratype: S-14/38-1: T55/0. Plate III, 4. Type stratum and locality: Kong Karls Land, Hårfagrehaugen section, Retziusfjellet Member,
4.4 m above base.
Occurence: Hhrfagrehaugen section, Retziusfjellet Member 4.4-32.4 m above base (Lower Callovian-Lower Oxfordian).
Remarks: Pareodinia barentsensis n. sp. differs from Pareodinia wigginsii n. sp, and Pareodinia sp. C of Wiggins (1975, pl.2, fig.12) in having ornament grouped in characteristic fields and a clearly expressed paracingulum.