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Higumastra laxa
Description: Test with large central area and short, wide rays. Rays tapering distally with short, massive triradiate spines. One spine slightly longer than other three. Rays comprised of large tetragonal and pentagonal pore frames with five pores visible laterally at proximal end and three pores visible distally. Central area of cortical shell consisting of concentrically arranged pentagonal and hexagonal pore frames without prominent nodes at vertices. Test with or without patagium.
Remarks: Higumastra laxa, n. sp., differs from H. splendida, n. sp., by lacking massive nodes at pore frame vertices and by having wider rays with shorter primary spines
Etymology: Laxus-a-um (Latin, adj). wide
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| Year | Name and author |
|---|---|
| 1987 | Higumastra laxa Yeh |
| 1987 | Higumastra splendida Yeh p. 26 figs. Pl. 8, figs. 2,4, 11-12, 16, 18, 25-27 |
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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.