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Wetzeliella symmetrica ssp. incisa
From Fensome et al., 2019:
Wetzeliella symmetrica ssp. incisa Gerlach, 1961
Holotype: Gerlach, 1961, pl.25, fig.9
Age: Middle-Late Oligocene
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Original description Gerlach, 1961:
Holotype: Pr 1170/7 (282). Taf. 25, Fig. 9
Paratype: Pr 1170/8l (272), Pr 1170/9 (274).
Locus tyricus: Bohrung Emsburenn 7, K 179 m.
Stratum typicum: Middle Oligocene at 179m depth
Derviation of name: "incisa" because of the notched lateral horns
Diagnosis:
A subspecies of Wetzeliella symmetrica WEILER 1956 with the following special characteristics: The lateral horns have no appendages, both lateral horns are notched. The appendages are shorter and fewer in number.
Description:
The outline of the forms is compact, diamond-shaped. The apical and anta-pical horns are pointedly extended. The two lateral horns show a distinct notch. The processes are missing on the outer edges of the horns. The covering of protuberances is consistently less than in Wetzeliella symmetrica. Furthermore, these processes are shorter at the edges of the outer shell. Consistent with W. symmetrica, the appendages are hollow, with two to four short lobes distally. Occasionally, a process branches into two branches in the last upper quarter, which, in turn, exhibit the aforementioned lobe at their end.
A pyloma was not observed. The formation of eclosion holes was also found only very rarely in the common representatives of the genus Wetzeliella. Dorso-ventral orientation
cannot be performed due to the lack of pylomas,
but the apical and antapical poles can be distinguished in most cases. Like W. symmetrica symmetrica,
the new subspecies also shows a hint of a short, two-tone lobe next to the antapical horn. There is no discernible difference in size between the present specimens of W. symmetrica symmetrica and W. symmetrica incisa.
The color of the external membrane and the inner capsule is a bright yellow. The external membrane appears hyaline.
Number of individuals: 12
Measures:
Holotype = 131 (94):126 (94)
Paratype = 118 (76):113 (76)
135 (110):126(94)
Maximum = 150 (110):142(105)
Minimum = 118 (76):113(76)
length of the processes: 8–10
Wetzeliella symmetrica ssp. incisa Gerlach, 1961
Holotype: Gerlach, 1961, pl.25, fig.9
Age: Middle-Late Oligocene
---------------------------------------------------------------------------------------------------
Original description Gerlach, 1961:
Holotype: Pr 1170/7 (282). Taf. 25, Fig. 9
Paratype: Pr 1170/8l (272), Pr 1170/9 (274).
Locus tyricus: Bohrung Emsburenn 7, K 179 m.
Stratum typicum: Middle Oligocene at 179m depth
Derviation of name: "incisa" because of the notched lateral horns
Diagnosis:
A subspecies of Wetzeliella symmetrica WEILER 1956 with the following special characteristics: The lateral horns have no appendages, both lateral horns are notched. The appendages are shorter and fewer in number.
Description:
The outline of the forms is compact, diamond-shaped. The apical and anta-pical horns are pointedly extended. The two lateral horns show a distinct notch. The processes are missing on the outer edges of the horns. The covering of protuberances is consistently less than in Wetzeliella symmetrica. Furthermore, these processes are shorter at the edges of the outer shell. Consistent with W. symmetrica, the appendages are hollow, with two to four short lobes distally. Occasionally, a process branches into two branches in the last upper quarter, which, in turn, exhibit the aforementioned lobe at their end.
A pyloma was not observed. The formation of eclosion holes was also found only very rarely in the common representatives of the genus Wetzeliella. Dorso-ventral orientation
cannot be performed due to the lack of pylomas,
but the apical and antapical poles can be distinguished in most cases. Like W. symmetrica symmetrica,
the new subspecies also shows a hint of a short, two-tone lobe next to the antapical horn. There is no discernible difference in size between the present specimens of W. symmetrica symmetrica and W. symmetrica incisa.
The color of the external membrane and the inner capsule is a bright yellow. The external membrane appears hyaline.
Number of individuals: 12
Measures:
Holotype = 131 (94):126 (94)
Paratype = 118 (76):113 (76)
135 (110):126(94)
Maximum = 150 (110):142(105)
Minimum = 118 (76):113(76)
length of the processes: 8–10