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Wetzeliella horrida
From Fensome et al., 2019:
Wetzeliella "horrida" Jan du Chêne and Châteauneuf, 1975, p.28,30, pl.1, figs.1–7; pl.3, figs.1–6.
Holotype: Jan du Chêne and Châteauneuf, 1975, pl.1, figs.1–4.
Taxonomic senior synonym: Wetzeliella articulata, according to Stover and Evitt (1978, p.131).
Age: early Eocene.
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Original description (Jan du Chêne and Châteauneuf, 1975) Translation PKB 2024
Holotype: Sample RJ C 1376, Gres du Gur·nijel, Riffenmatt-Ottenleuebad section (fig. 1 b, point
C), level 16 of Hekel (1968, p. 502, fig. 2), Bernese Prealps, Switzerland. (Pl. 1, fig. 1 to 4). Origin of the name: from Latin horrible.
Diagnosis: The outline of the periphragm, with bilateral symmetry, is pentagonal with a horn at each angle. The apical horn and the two antapical horns are of the same length. They are pointed and longer than the lateral horns. The antapical horns are clearly detached from each other. The lateral horns are short and broad at their base. Their end is decorated with a series of processes.
The processes are numerous, long, straight or curved, simple OR branched, distributed over the entire
the surface and margins of the periphragm. They are shorter and fewer on the apical horns
and antapical. They are full and can be grouped at their base OR solitary. Their extremity
distal, closed, is swollen in the shape of a club. The capsule is ovoid to circular. The archeopyle
is quadrangular and small, in an intermediate position. The equatorial furrow is not marked. Tabulation
is not visible.
Dimensions (in μ.): Holotype:
Periphragm:
Height: 106 μ..
Width: 90 μ..
Apical horn: 20 μ..
Right antapical horn: 20 μ..
Left antapical horn: 20 μ..
Lateral horns: 14 μ..
Maximum process length: 18 μ..
Capsule:
Height: 60 μ..
Width: 60 μ..
Variations in dimensions (Number of specimens
measurements: 22):
Periphragm:
Height: 74 (90) llO μ..
Width: 64 (78) 92 μ..
Apical horn: 10 (17) 22 μ..
Right antapical horn: 12 (20) 28 μ..
Left antapical horn: 12 (20) 28 μ..
Process length: always greater
at 10 μ., on average 13 μ..
Capsule:
Height: 46 (54) 66 μ.
Width: 40 (52) 64 µ.
The antapical horns are always longer or of the same length as the apical horn. The observation of numerous specimens under a scanning electron microscope did not make it possible to detect the traces of a tabulation and the equatorial furrow
Comparisons: Wetzeliella horrida n. sp. reminiscent of Deflandrea longispinosa WILSON 1968 by the large number of processes and their length. It differs by the presence of lateral comes and by the greater width of the apical and antapical comes.
Stratigraphic extension: Holotype: Cuisian: Discoaster lodoensis zone (Martini 1971). Gres du Gurnigel, Switzerland. Other specimens: This species is common in zone NP 13 in Discoaster lodoensis of the Riffenmatt-Ottenleuebad section of the Gurnigel Gres (Hekel 1968, p. 502, level 16). She appears at the top of zone NP 12 with Marthasterites tribrachiatus from the same section where it is rare (level 15 of Hekel).
Wetzeliella "horrida" Jan du Chêne and Châteauneuf, 1975, p.28,30, pl.1, figs.1–7; pl.3, figs.1–6.
Holotype: Jan du Chêne and Châteauneuf, 1975, pl.1, figs.1–4.
Taxonomic senior synonym: Wetzeliella articulata, according to Stover and Evitt (1978, p.131).
Age: early Eocene.
---------------------------------------------------------------------------------------------------
Original description (Jan du Chêne and Châteauneuf, 1975) Translation PKB 2024
Holotype: Sample RJ C 1376, Gres du Gur·nijel, Riffenmatt-Ottenleuebad section (fig. 1 b, point
C), level 16 of Hekel (1968, p. 502, fig. 2), Bernese Prealps, Switzerland. (Pl. 1, fig. 1 to 4). Origin of the name: from Latin horrible.
Diagnosis: The outline of the periphragm, with bilateral symmetry, is pentagonal with a horn at each angle. The apical horn and the two antapical horns are of the same length. They are pointed and longer than the lateral horns. The antapical horns are clearly detached from each other. The lateral horns are short and broad at their base. Their end is decorated with a series of processes.
The processes are numerous, long, straight or curved, simple OR branched, distributed over the entire
the surface and margins of the periphragm. They are shorter and fewer on the apical horns
and antapical. They are full and can be grouped at their base OR solitary. Their extremity
distal, closed, is swollen in the shape of a club. The capsule is ovoid to circular. The archeopyle
is quadrangular and small, in an intermediate position. The equatorial furrow is not marked. Tabulation
is not visible.
Dimensions (in μ.): Holotype:
Periphragm:
Height: 106 μ..
Width: 90 μ..
Apical horn: 20 μ..
Right antapical horn: 20 μ..
Left antapical horn: 20 μ..
Lateral horns: 14 μ..
Maximum process length: 18 μ..
Capsule:
Height: 60 μ..
Width: 60 μ..
Variations in dimensions (Number of specimens
measurements: 22):
Periphragm:
Height: 74 (90) llO μ..
Width: 64 (78) 92 μ..
Apical horn: 10 (17) 22 μ..
Right antapical horn: 12 (20) 28 μ..
Left antapical horn: 12 (20) 28 μ..
Process length: always greater
at 10 μ., on average 13 μ..
Capsule:
Height: 46 (54) 66 μ.
Width: 40 (52) 64 µ.
The antapical horns are always longer or of the same length as the apical horn. The observation of numerous specimens under a scanning electron microscope did not make it possible to detect the traces of a tabulation and the equatorial furrow
Comparisons: Wetzeliella horrida n. sp. reminiscent of Deflandrea longispinosa WILSON 1968 by the large number of processes and their length. It differs by the presence of lateral comes and by the greater width of the apical and antapical comes.
Stratigraphic extension: Holotype: Cuisian: Discoaster lodoensis zone (Martini 1971). Gres du Gurnigel, Switzerland. Other specimens: This species is common in zone NP 13 in Discoaster lodoensis of the Riffenmatt-Ottenleuebad section of the Gurnigel Gres (Hekel 1968, p. 502, level 16). She appears at the top of zone NP 12 with Marthasterites tribrachiatus from the same section where it is rare (level 15 of Hekel).