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Janiceps peracuta
Taxonomy
Spirigera peracuta was named by Stache (1878). It is a 3D body fossil. It is the type species of Janiceps.
It was recombined as Janiceps peracuta by Posenato (2001).
It was recombined as Janiceps peracuta by Posenato (2001).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1878 | Spirifer sextensis Stache |
| 1878 | Spirigera janiceps Stache |
| 1878 | Spirigera peracuta Stache p. 60 figs. Pl 3, figs 5a-c,6a-d |
| 2001 | Janiceps peracuta Posenato p. 205 figs. Pl 1, figs 1-10; text-figs 6,7 |
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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.
†Janiceps peracuta Stache 1878
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Invalid names: Spirifer sextensis Stache 1878 [synonym], Spirigera janiceps Stache 1878 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 5 | 8.03 | 3.20 | 20.6 | 10.3 | 7.03 | |
| valve height | 8 | 6.24 | 3.50 | 10.5 | 7.30 | 2.66 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: Changhsingian or 254.14000 to 251.90200 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Changhsingian | Italy | Janiceps peracuta (88653 101908 101912 101933 116439) |