Corollithion praesignum
Varol, in prep.
Jan 30, 2026
Set number: 2985
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1
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2
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3
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4
10µm
Set number: 2983
-
1
-
2
-
3
10µm
Set number: 2984
-
1
-
2
-
3
10µm
Final Epithet
Corollithion praesignum Varol, in prep.
Basionym
Corollithion praesignum Varol, in prep.
Description
Small, regular hexagonal species of Corollithion characterised by a double protolith wall surrounding a central area occupied by a Greek cross.
Optical Properties
The narrow outer wall remains in constant extinction, whereas the wider inner wall and the central cross exhibit greyish-white interference colours in plan view under crossed polars.
Remarks
Corollithion praesignum differs from Corollithion signum in having a regular hexagonal outline and a Greek cross with equal arms, whereas the latter exhibits an elongated hexagonal outline and a standard cross with one arm longer than the other.