| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Amphicyrtoceras
Taxonomy
Amphicyrtoceras was named by Foerste (1924).
It was assigned to Oncoceratidae by Strand (1934); to Acleistoceratidae by Teichert et al. (1964); and to Oncoceratida by Sepkoski (2002).
It was assigned to Oncoceratidae by Strand (1934); to Acleistoceratidae by Teichert et al. (1964); and to Oncoceratida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1924 | Amphicyrtoceras Foerste p. 255 |
| 1934 | Amphicyrtoceras Strand |
| 1964 | Amphicyrtoceras Teichert et al. p. 308 |
| 2002 | Amphicyrtoceras Sepkoski |
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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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004 | |||||
Age range: base of the Rawtheyan to the top of the Sheinwoodian or 448.80000 to 430.60000 Ma
Collections (19 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Rawtheyan | Norway (Oslo) | A. benedictae (73439) | |
| Aeronian | Canada (Québec) | A. futile (24416 24418) | |
| Aeronian | Canada (Quebec) | A. sp. (158598 158608) | |
| Aeronian - Telychian | Canada (Québec) | A. futile (24412) | |
| Telychian | Canada (Québec) | A. futile (24420 24423 24424 24435) | |
| Telychian | Canada (Quebec) | A. cooperi (184842) | |
| Telychian | USA (Iowa) | A. sp. (24969 25015) | |
| Telychian - Wenlock | Canada (Manitoba) | A. reedsi (26453 26632) | |
| Sheinwoodian | USA (Wisconsin) | A. laterale, A. orcas, A. sp. 1 (13069 13075) | |
| Wenlock - Silurian | USA (Wisconsin) | A. laterale, A. sp. 1 (13107) A. orcas, A. sp. 1 (13104) |