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Tropidoceras rotundum
Taxonomy
Cycloceras rotunda was named by Futterer (1893) [Cycloceras masseanum var. rotunda].
It was recombined as Tropidoceras rotundum by Alkaya and Meister (1995), Meister and Friebe (2003).
It was recombined as Tropidoceras rotundum by Alkaya and Meister (1995), Meister and Friebe (2003).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1893 | Cycloceras rotunda Futterer |
| 1995 | Tropidoceras rotundum Alkaya and Meister p. 158 figs. Pl 12, fig 1 |
| 2003 | Tropidoceras rotundum Meister and Friebe |
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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.
†Tropidoceras rotundum Futterer 1893
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 45.0 | |||||
| shell diameter | 1 | 130.0 | |||||
| shell inflation | 1 | 51.0 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Ibex to the top of the Late/Upper Pliensbachian or 192.90000 to 184.20000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Sinemurian - Late/Upper Pliensbachian | Austria | Tropidoceras rotundum (218932) | |
| Ibex | Türkiye | Tropidoceras rotundum (147337) |