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Polyptychites (Amundiptychites)
Taxonomy
Amundiptychites was named by Kemper and Jeletzky (1979).
It was synonymized subjectively with Polyptychites by Bogomolov (1989); it was reranked as Polyptychites (Amundiptychites) by Alsen (2006).
It was assigned to Polyptychitinae by Kemper and Jeletzky (1979) and Jeletzky and Kemper (1988); and to Polyptychites by Alsen (2006).
It was synonymized subjectively with Polyptychites by Bogomolov (1989); it was reranked as Polyptychites (Amundiptychites) by Alsen (2006).
It was assigned to Polyptychitinae by Kemper and Jeletzky (1979) and Jeletzky and Kemper (1988); and to Polyptychites by Alsen (2006).
Subtaxa
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Amundiptychites Kemper and Jeletzky p. 3 |
| 1988 | Hollwediceras Jeletzky and Kemper p. 86 |
| 1988 | Amundiptychites Jeletzky and Kemper p. 190 |
| 2006 | Polyptychites (Amundiptychites) Alsen p. 106 |
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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.
Subg. †Polyptychites (Amundiptychites) Kemper and Jeletzky 1979
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†Amundiptychites thorsteinssoni Jeletzky and Kemper 1988
†Polyptychites (Amundiptychites) fasciatus Jeletzky and Kemper 1988
†Polyptychites (Amundiptychites) sphaericus Koenen 1902
†Polyptychites (Amundiptychites) sverdrupi Kemper and Jeletzky 1979
Invalid names: Hollwediceras Jeletzky and Kemper 1988 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 25.0 | |||||
| shell diameter | 1 | 65.0 | |||||
| shell inflation | 1 | 21.5 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Late/Upper Valanginian or 140.20000 to 136.40000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Valanginian | Canada (Northwest Territories) | Amundiptychites sverdrupi (87533) | |
| Late/Upper Valanginian | Canada (Northwest Territories) | Amundiptychites fasciatus (87555) Amundiptychites sverdrupi (87529) Amundiptychites thorsteinsoni, Amundiptychites sverdrupi, Amundiptychites fasciatus (87552) | |
| Late/Upper Valanginian | Poland (Gmina Tomaszów Mazowiecki) | Hollwediceras sphaericus (192523) | |
| Late/Upper Valanginian | Greenland | Polyptychites fasciatus (83708) |