Back
Wetzeliella ovalis
From Fensome et al., 2019:
Wetzeliella ovalis Eisenack, 1954
Holotype: Eisenack, 1954, pl.8, fig.17
Age: Early Oligocene
---------------------------------------------------------------------------------------------------
Original description (Eisenack, 1954b) Translation pkb 2024
Type: The specimen preserved in preparation Ph. 38 and shown in Fig. 5.
Diagnosis: Outer shell relatively thin, almost only as a narrow, very jagged edge around the oval and i.a. Rectly coarse inner body formed; there is no visible space between the two covers. Lateral and antapical horns, sometimes also the apical horn, are largely regressed or sideways. Lateral and antapical horns, sometimes also the apical horn, are largely regressed or are hardly separated from the lateral border, so that the overall shape becomes +/- oval. Front and back only sparsely covered with thorns. The bases of the spines of the lateral edge mostly merge with the seam. Smaller than W. articulata.
Remarks: The reduction of the horns can go to different extents; this or that is often indicated. Sometimes the side horns are highlighted by notches. Transitional forms of W. articulata occur sporadically. In a number of specimens, the hatch located under the apex is still closed with the lid, which appears to be separated from the rest of the shell by a fine, almost circular crack.
Dimensions: Type specimen: 104:71 µ, capsule 64:57µ, the length varies between 106 and 81 µ and is on average (8 pieces) 96 µ. 16 specimens have been prepared, plus some transitional forms to W. articulata as in Fig. 7.
Wetzeliella ovalis Eisenack, 1954
Holotype: Eisenack, 1954, pl.8, fig.17
Age: Early Oligocene
---------------------------------------------------------------------------------------------------
Original description (Eisenack, 1954b) Translation pkb 2024
Type: The specimen preserved in preparation Ph. 38 and shown in Fig. 5.
Diagnosis: Outer shell relatively thin, almost only as a narrow, very jagged edge around the oval and i.a. Rectly coarse inner body formed; there is no visible space between the two covers. Lateral and antapical horns, sometimes also the apical horn, are largely regressed or sideways. Lateral and antapical horns, sometimes also the apical horn, are largely regressed or are hardly separated from the lateral border, so that the overall shape becomes +/- oval. Front and back only sparsely covered with thorns. The bases of the spines of the lateral edge mostly merge with the seam. Smaller than W. articulata.
Remarks: The reduction of the horns can go to different extents; this or that is often indicated. Sometimes the side horns are highlighted by notches. Transitional forms of W. articulata occur sporadically. In a number of specimens, the hatch located under the apex is still closed with the lid, which appears to be separated from the rest of the shell by a fine, almost circular crack.
Dimensions: Type specimen: 104:71 µ, capsule 64:57µ, the length varies between 106 and 81 µ and is on average (8 pieces) 96 µ. 16 specimens have been prepared, plus some transitional forms to W. articulata as in Fig. 7.