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Opsiconidion
Taxonomy
Opsiconidion was named by Ludvigsen (1974) [Sepkoski's age data: O Ashg-l D Fras Sepkoski's reference number: 1066]. It is not extant.
It was assigned to Biernatinae by Holmer (1989); to Biernatidae by Williams et al. (2000); and to Atrypida by Sepkoski (2002).
It was assigned to Biernatinae by Holmer (1989); to Biernatidae by Williams et al. (2000); and to Atrypida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Opsiconidion Ludvigsen |
| 1989 | Opsiconidion Holmer |
| 2000 | Opsiconidion Williams et al. p. 131 |
| 2002 | Caenotreta Sepkoski |
| 2002 | Opisconidion 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. †Opsiconidion Ludvigsen 1974
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†Opsiconidion decessus Mergl 2001
†Opsiconidion nanus Mergl 2019
†Opsiconidion praecursor Popov et al. 1994
Invalid names: Caenotreta [synonym]
Diagnosis
No diagnoses are available