Retecapsa rotunda
Varol, in prep.
Feb 13, 2026
Set number: 3135
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10µm
Final Epithet
Retecapsa rotunda Varol, in prep.
Basionym
Retecapsa rotunda Varol, in prep.
Etymology
From the Latin rotunda, meaning “rounded” or “circular in outline”, referring to the outline of the placolith.
Description
Circular species of Retecapsa are constructed of a cretarhabdid pelaga sloping towards a distally arched central area, which is spanned by an indistinct axial cross supporting a distal process.
The inter-cross area is occupied by lateral bars that delimit pores arranged in a single complete concentric cycle. Each quadrant typically contains four pores formed by three lateral bars, a feature characteristic of Retecapsa rotunda.
Optical Properties
Optical properties consistent with those of Retecapsa, but its elongation direction cannot be determined.