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Taxonomy
Species
Entered
by P. Wagner on 2023-12-25
Synonymy list
| Year | Name and author |
|---|---|
| 2016 | Spinobolus Zhang et al. pp. 342 - 343 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Z.-F. Zhang et al. 2016 | Shell thin, biconvex and longitudinally subtrian-gular in commissural outline, postlarval shell ornamentedwith distinct prone spinose protrusions along marginal edgeof concentric growth lines; larval shell well defined, withfaint radius becoming fade outwards; ventral pseudointerareawith variably developed flexure lines, distinctly bisected bybroad, deep subtriangular pedicle groove; paired posterolateral muscle scars developed and slightly elevated above valve floor, immediately anterior to flexure lines; dorsal valve interior with small pseudointerarea divided by shallow mediangroove; dorsal median ridge developed and extending to anteriormargin. |