Aktasia obscura
Varol, in prep.
Jan 16, 2026
Set number: 2792
-
1
-
2
-
3
-
4
-
5
-
6
10µm
Final Epithet
Aktasia obscura Varol, in prep.
Basionym
Aktasia obscura Varol, in prep.
Diagnosis
Small species of Aktasia (< 6.0 µm) have an axial cross composed of a single row of segments, which goes extinct at approximately 62° when observed from the distal side.
Etymology
From Latin obscura, meaning ‘dark’, referring to the unique extinction position of the cross at approximately 62°.
Dimensions Of Holotype
Maximum length: 4.66µm, Maximum width: 3.65µm
Description
Small species of Aktasia (< 6.0 µm) have a zeugoid outer wall and a protolith inner wall composed of eight large sub-quadrilateral segments. The central area is completely covered by an axial cross composed of a single row of segments and lacking a distal process.
Optical Properties
The axial cross goes extinct at approximately 62° when observed from the distal side.