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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Paracyclas dubia
Taxonomy
Paracyclas dubia was named by Beushausen (1895).
Sister species lacking formal opinion data
P. alleni, P. antiqua, P. arguta, P. belgica, P. bohemica, P. ellipticus, P. insueta, P. lirata, P. marginata, P. numismalis, P. parvula, P. rowleyi, P. rugosa, P. sabini, P. tenuis, P. devoniana, P. dubius, P. lirata, P. parvula, P. paucipleura, P. rowleyi, P. rugosa, P. sabini, P. validalinea, P. validelinea, P. bulla, P. perovalis, P. quadratus, P. antiqua, P. valnevensis, P. giganteus, P. lirata, P. pohly, P. seminularis
Synonymy list
| Year | Name and author |
|---|---|
| 1895 | Paracyclas dubia Beushausen |
| 1982 | Paracyclas dubia Chen p. 220 figs. Pl 1, fig 7 |
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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.
†Paracyclas dubia Beushausen 1895
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| valve height | 1 | 4.70 |
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| Source: superf = superfamily, c = class | |||||
| References: Aberhan et al. 2004, Sanchez Roig 1926 | |||||
Age range: base of the Frasnian to the top of the Tournaisian or 382.31000 to 346.70000 Ma
Collections (10 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Frasnian | USA (Iowa) | Paracyclas dubia (6245 6250 6251 54398 54483 54623 54852 54853 54854) | |
| Tournaisian | China (Xizang) | Paracyclas dubia (150465) |