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Cymatonota prolata
Taxonomy
Cymatonota prolata was named by Kříž (2008). Its type specimen is JK 11738, a shell (right valve), and it is a 3D body fossil.
Synonymy list
| Year | Name and author |
|---|---|
| 2008 | Cymatonota prolata Kříž pp. 268 – 270 figs. 11C, D |
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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.
†Cymatonota prolata Kříž 2008
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Kříž 2008 | The Ludlow Cymatonota with distinctly long shells.
Shell longitudinally elongated (L ≥ 28.5, H ≥ 12.6), equivalve, strongly inequilateral, obese (H/W = 1.5). The shell has both anterior and posterior shell gapes. Umbones are prominent, beaks prosogyrate, in 1/4 of the length of shell from anterior. Dorsal margin is long, straight, almost parallel with the ventral margin, which is long, concave, and with ventral sinus. Posterior and anterior margins are rounded. Posterior part of the shell is higher than anterior and maximum width of the shell is about one fourth of the shell length from the posterior end. Outer surface sculpture is composed of the growth wrinkles and irregular narrow growth bands and furrows. Inner surface sculpture is similar. Muscle scars, hinge and ligament unknown. Shell thickness is 0.10–0.17 mm. |