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Cyclozyga mirabilis
Taxonomy
Cyclozyga mirabilis was named by Knight (1930). Its type specimen is YPM 13005, a shell, and it is not a trace fossil. Its type locality is SL-1. Headwaters of Feefee Creek, north of Olive St. & west of Lindberg Blvd., 1.5 km northwest of Stratmann (Olivette), which is in a Moscovian offshore shale in the Appanoose Formation of Missouri. It is the type species of Cyclozyga.
Synonymy list
| Year | Name and author |
|---|---|
| 1930 | Cyclozyga mirabilis Knight |
| 1978 | Cyclozyga mirabilis Hoare and Sturgeon pp. 855 - 856 figs. pl. 1 f. 13; pl. 2 f. 10-13; table 1 |
| 1998 | Cyclozyga mirabilis Nützel p. 190 figs. pl. 30 f. N-O |
| 2001 | Cyclozyga mirabilis Kues and Batten pp. 79 - 80 figs. f. 15.10-15.11 |
| 2023 | Cyclozyga mirabilis Wagner p. 5291 |
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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.
†Cyclozyga mirabilis Knight 1930
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. D. Hoare and M. T. Sturgeon 1978 | Very small, turbinate, with deeply impressed sutures, whorl profile strongly rounded, aperture subrounded, base rounded and anomphalous umbilicus. Protoconch with one to one and one-half smooth whorls followed by two whorls with well developed collabral costellae. Protoconch separated from teleoconch by a distinct growth line. Teleoconch marked by four, nearly equally spaced, narrow revolving costellae with wide, shallowly concave interspaces on the lateral whorl surface. Revolving costellae may become indistinct to obsolete on later whorls. Growth lines are smoothly prosocline. |