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Protozyga exigua
Taxonomy
Atrypa exigua was named by Hall (1847).
It was recombined as Zygospira exigua by Schuchert (1897); it was recombined as Protozyga exigua by Cooper (1956), Mitchell (1977) and Popov et al. (1999).
It was recombined as Zygospira exigua by Schuchert (1897); it was recombined as Protozyga exigua by Cooper (1956), Mitchell (1977) and Popov et al. (1999).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1847 | Atrypa exigua Hall |
| 1897 | Zygospira exigua Schuchert p. 463 |
| 1956 | Protozyga exigua Cooper pp. 678 - 679 figs. Plate 119, D, figures 9-14; plate 140, F, figures 38-42; plate 142, G, figures 29-33 |
| 1977 | Protozyga exigua Mitchell |
| 1999 | Protozyga exigua Popov et al. p. 653 |
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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.
†Protozyga exigua Hall 1847
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Diagnosis
No diagnoses are available