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Polyptychites (Siberiptychites)
Taxonomy
Siberiptychites was named by Kemper and Jeletzky (1977) [Sepkoski's age data: K Vala-l].
It was synonymized subjectively with Euryptychites by Bogomolov (1989); it was reranked as Polyptychites (Siberiptychites) by Alsen (2006).
It was assigned to Polyptychitinae by Jeletzky and Kemper (1988); to Ammonoidea by Sepkoski (2002); and to Polyptychites by Alsen (2006).
It was synonymized subjectively with Euryptychites by Bogomolov (1989); it was reranked as Polyptychites (Siberiptychites) by Alsen (2006).
It was assigned to Polyptychitinae by Jeletzky and Kemper (1988); to Ammonoidea by Sepkoski (2002); and to Polyptychites by Alsen (2006).
Subtaxa
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1977 | Siberiptychites Kemper and Jeletzky |
| 1988 | Siberiptychites Jeletzky and Kemper p. 132 |
| 2002 | Siberiptychites Sepkoski |
| 2006 | Polyptychites (Siberiptychites) Alsen p. 90 |
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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 (Siberiptychites) Kemper and Jeletzky 1977
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†Polyptychites (Siberiptychites) stubendorffi Schmidt 1872
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Invalid names: Polyptychites tscherskii Pavlov 1914 [synonym]
Subg. †Siberiptychites (Pseudoeuryptychites) Jeletzky 1986
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†Siberiptychites (Pseudoeuryptychites) middendorffi Pavlov 1914
†Siberiptychites (Pseudoeuryptychites) pavlovi Voronets 1962
Subg. †Siberiptychites (Siberiptychites) Kemper and Jeletzky 1977
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†Siberiptychites (Siberiptychites) fascicostatus Jeletzky and Kemper 1988
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 9 | 20.2 | 11.0 | 29.0 | 26.0 | 7.28 | |
| shell diameter | 9 | 51.3 | 27.0 | 76.5 | 61.5 | 20.0 | |
| shell inflation | 9 | 15.3 | 6.50 | 23.7 | 18.5 | 6.36 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Valanginian to the top of the Late/Upper Valanginian or 139.80000 to 136.40000 Ma
Collections (25 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Valanginian | Russian Federation (Siberia) | Euryptychites stubendorffi (64295) | |
| Early/Lower Valanginian | Greenland | Polyptychites stubendorffi (83742) | |
| Early/Lower Valanginian | Russian Federation | Euryptychites stubendorffi (189436 189437 189609 189611 189612 189614 189626 189627 189628 189630) | |
| Early/Lower Valanginian | Canada (Northwest Territories) | Siberiptychites fascicostatus (87525) Siberiptychites middenforffi, Siberiptychites stubendorffi (87537) Siberiptychites sp. B, Siberiptychites stubendorffi, Siberiptychites middendorffi (87536) Siberiptychites stubbendorgi (87526) Siberiptychites stubbendorgi, Siberiptychites fascicostatus, Siberiptychites middendorfi (87423) Siberiptychites stubendorffi (87534 87538) Siberiptychites stubendorffi, Siberiptychites sp. A (87553) | |
| Late/Upper Valanginian | Greenland | Polyptychites stubendorffi (83717) Polyptychites studendorffi (83715) | |
| Late/Upper Valanginian | Canada (Northwest Territories) | Siberiptychites stubendorffi, Siberiptychites middendorffi (87551) | |
| Valanginian | Greenland | Polyptychites stubendorffi (83741) | |
| Valanginian | Svalbard and Jan Mayen | Polyptychites tscherskii (211955) |