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Polytrema
Taxonomy
Polytrema was named by Risso (1826). It is extant.
It was assigned to Homotrematidae by Cushman (1927).
It was assigned to Homotrematidae by Cushman (1927).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1826 | Polytrema Risso |
| 1927 | Polytrema Cushman p. 96 |
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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.
G. Polytrema Risso 1826
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†Polytrema subfibrosa d'Orbigny 1850
†Polytrema subspongites d'Orbigny 1850
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: superf = superfamily, subo = suborder, o = order | |||||
| References: Loeblich and Tappan 1984, Kiessling 2004 | |||||