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Rolumbus beatus
Original description: Test dicyrtid. Cephalis medium in size, hemispherical imperforate, covered with layer of microgranular silica. Two horns elongate, nearly equal in length, triradiate with three narrow grooves. Thorax inflated in distal portion, test wall comprised of relatively large polygonal pore frames with larger pore frames in central portion and smaller pore frames at both ends. Pore frames thin in rims and sides. Four feet thin, moderately long, originating from upper part of thorax, feet triradiate in axial section with three narrow ridges alternating with three narrow grooves. Aperture large, circular in outline, with velum-like structure when well-preserved.
Original remarks: Rolumbus beatus, n. sp., can be distinguished from R. mirus Pessagno, Whalen, and Yeh (1986) by having a test with less massive pore frames and horns.
Etymology: Beatus-a-um (Latin, adj.) happy.
| Year | Name and author |
|---|---|
| 1987 | Rolumbus beatus Yeh p. 76 figs. Pl. 11, fig. 2.; Pl. 25, figs. 9, 14 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.