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Theonoa
Taxonomy
Theonoa was named by Lamouroux (1821) [Sepkoski's age data: J Aale R Sepkoski's reference number: 581,589]. It is extant. It is the type genus of Theonoidae.
It was assigned to Fascigeridae by Ulrich and Bassler (1904); to Cyclostomata by Sepkoski (2002); and to Theonoidae by Bassler (1953), Zatoń et al. (2013).
It was assigned to Fascigeridae by Ulrich and Bassler (1904); to Cyclostomata by Sepkoski (2002); and to Theonoidae by Bassler (1953), Zatoń et al. (2013).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1821 | Theonoa Lamouroux |
| 1904 | Theonoa Ulrich and Bassler p. 406 |
| 1953 | Theonoa Bassler p. G57 |
| 2002 | Theonoa Sepkoski |
| 2013 | Theonoa Zatoń et al. p. 857 |
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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. Theonoa Lamouroux 1821
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†Theonoa glomerata Glenn 1904
†Theonoa minuta Reuss 1867
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class, uc = unranked clade | |||||
| References: Smith et al. 2006, Nesnidal et al. 2013 | |||||
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Callovian - Oxfordian | Ukraine | T. sp. (67868) |