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Zenostephanus ranbyensis
Taxonomy
Aulacostephanus (Xenostephanus) ranbyensis was named by Arkell and Callomon (1963). It is the type species of Zenostephanus.
It was recombined as Zonovia (Xenostephanus) ranbyensis by Mesezhnikov (1984); it was recombined as Zenostephanus ranbyensis by Callomon et al. (2009).
It was recombined as Zonovia (Xenostephanus) ranbyensis by Mesezhnikov (1984); it was recombined as Zenostephanus ranbyensis by Callomon et al. (2009).
Synonymy list
| Year | Name and author |
|---|---|
| 1963 | Aulacostephanus (Xenostephanus) ranbyensis Arkell and Callomon p. 232 figs. Pl 28, fig 1; pl 29, fig 4 |
| 1984 | Zonovia (Xenostephanus) ranbyensis Mesezhnikov p. 118 figs. Pl 28, fig 3 |
| 2009 | Zenostephanus ranbyensis Callomon et al. p. 671 |
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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.
†Zenostephanus ranbyensis Arkell and Callomon 1963
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Early/Lower Kimmeridgian or 155.70000 to 150.80000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Kimmeridgian | Russian Federation (Krasnoyarsk) | Zonovia ranbyensis (163996) |