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Dichacaenia
Taxonomy
Dichacaenia was named by Cooper and Dutro (1982) [Sepkoski's age data: D Give-u Sepkoski's reference number: 708]. Its type is Dichacaenia perplexa.
It was assigned to Strophalosiinae by Cooper and Dutro (1982); to Donalosiinae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
It was assigned to Strophalosiinae by Cooper and Dutro (1982); to Donalosiinae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
Species
D. perplexa (type species), D. umbonata
Synonymy list
| Year | Name and author |
|---|---|
| 1982 | Dichacaenia Cooper and Dutro pp. 60 - 61 |
| 2000 | Dichacaenia Williams et al. p. 581 |
| 2002 | Dichacaenia Sepkoski |
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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. †Dichacaenia Cooper and Dutro 1982
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†Dichacaenia perplexa Cooper and Dutro 1982
†Dichacaenia umbonata Cooper and Dutro 1982
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. A. Cooper and J. T. Dutro 1982 | Strophalosiids of medium size, moderately concavo-convex with sparsely spinose ventral valve and dorsal valve without spines. |