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Isorthis pygmaea
Taxonomy
Dalmanella pygmaea was named by Dunbar (1919).
It was recombined as Isorthis pygmaea by Schuchert and Cooper (1932) and Amsden (1958).
It was recombined as Isorthis pygmaea by Schuchert and Cooper (1932) and Amsden (1958).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1919 | Dalmanella pygmaea Dunbar p. 52 figs. pl. 2, fig. 5 |
| 1932 | Isorthis pygmaea Schuchert and Cooper p. 150 |
| 1958 | Isorthis pygmaea Amsden pp. 62 - 64 figs. Plate XI, figures 5-14; plate XIII, figure 24. |
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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.
†Isorthis pygmaea Dunbar 1919
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Diagnosis
No diagnoses are available