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Polydectinae
Discussion
Only unnamed species
Taxonomy
Polydectinae was named by Dana (1851). It is extant. Its type is Polydectus.
It was assigned to Cancridae by Dana (1851); and to Xanthidae by Karasawa (1993), Schweitzer et al. (2010) and Schweitzer et al. (2021).
It was assigned to Cancridae by Dana (1851); and to Xanthidae by Karasawa (1993), Schweitzer et al. (2010) and Schweitzer et al. (2021).
Subtaxa
Lybia, Polydectus (type genus)
Synonymy list
| Year | Name and author |
|---|---|
| 1851 | Polydectinae Dana |
| 1993 | Polydectinae Karasawa p. 58 |
| 2010 | Polydectinae Schweitzer et al. |
| 2021 | Polydectinae Schweitzer et al. p. 21 |
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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.
Subfm. Polydectinae Dana 1851
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G. Lybia Milne Edwards 1834
G. Polydectus Milne-Edwards 1837
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: superf = superfamily, o = order, c = class | |||||
| References: Aberhan 1992, Turnsek 1997, Fearon and Clapham 2023 | |||||
Age range
Maximum range based only on fossils: base of the Early/Lower Miocene to the top of the Middle Miocene or 23.03000 to 11.60800 Ma
Minimum age of oldest fossil (stem group age): 11.608 Ma
Minimum age of oldest fossil (stem group age): 11.608 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Miocene - Middle Miocene | Japan (Shizuoka) | Lybia sp. (202476) |