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Orthotichia derbyi
Taxonomy
Orthis derbyi was named by Waagen (1884).
It was recombined as Enteletes derbyi by Schellwien (1900); it was recombined as Orthotichia derbyi by Yanagida (1973), Li et al. (1986), Sremac (1986).
It was recombined as Enteletes derbyi by Schellwien (1900); it was recombined as Orthotichia derbyi by Yanagida (1973), Li et al. (1986), Sremac (1986).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1884 | Orthis derbyi Waagen p. 565 figs. Pl 56, figs 2,5,6 |
| 1900 | Enteletes derbyi Schellwien |
| 1973 | Orthotichia derbyi Yanagida p. 359 figs. Pl 40, figs 2,3 |
| 1986 | Orthotichia derbyi Li et al. figs. Pl 1, fig 3 |
| 1986 | Orthotichia derbyi Sremac p. 12 figs. Pl 1, figs 2a-e |
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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.
†Orthotichia derbyi Waagen 1884
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 6 | 13.7 | 9.00 | 18.5 | 14.2 | 3.65 |
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: base of the Gzhelian to the top of the Changhsingian or 303.70000 to 251.90200 Ma
Collections (30 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gzhelian | China (Guangxi) | Orthotichia derbyi (134310) | |
| Roadian | Croatia | Orthotichia derbyi (62243 62289) | |
| Roadian | Japan | Orthotichia derbyi (52093) | |
| Wordian - Capitanian | China (Heilongjiang) | Orthotichia derbyi (61874 61881) | |
| Wuchiapingian | Pakistan | Orthis derbyi (90250 119851 119934 124768 125887 125901 125908 126278 126279 126281 126293 126298 126302 126341 126342 126343 126452 126454 126459 126941 126983 127007 127025) | |
| Changhsingian | Pakistan | Orthis derbyi (119554) |