| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Tetratrabs izeensis
Description: Test as with genus, medium to large in size; central area moderately large, cortical shell with extremely large tetragonal, pentagonal, or hexagonal pore frames without nodes at vertices. Rays
wide, medium in length, tapering with short massive triradiate spines. Each ray with six rows of widely spaced external beams visible laterally. Well-preserved specimens with short bars connecting two contiguous external beams and forming large rectangular pore frames above two rows of smaller polygonal pore frames.
Remarks: Tetratrabs izeensis,n. sp., is compared with T imlayi, n. sp., under the latter species.
| Year | Name and author |
|---|---|
| 1987 | Tetratrabs izeensis Yeh |
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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.