| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Arnioceras transitionis
Discussion
Replacement for Amm. geometricus var. hartmanni (Reynes 1879)
Taxonomy
Arnioceras transitionis was named by Spath (1956). It is not extant.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1956 | Arnioceras transitionis Spath |
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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.
†Arnioceras transitionis Spath 1956
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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 Sinemurian or 199.50000 to 192.90000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Sinemurian | United Kingdom (Gloucestershire) | Arnioceras transitionis (204155) |