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Dichotomites (Dichotomites)
Taxonomy
Dichotomites (Dichotomites) was named by Koenen (1909). Its type is Ammonites bidichotomus.
It was assigned to Dichotomites by Koenen (1909), Alsen (2006).
It was assigned to Dichotomites by Koenen (1909), Alsen (2006).
Subtaxa
Dichotomites (Dichotomites) bidichotomus (syn. Dichotomites toryschensis, Ringnesiceras (Elleficeras) ellefense, Amundiptychites sachsi, Polyptychites terscissus, Dichotomites (Dichotomites) involutus, Amundiptychites chatangensis, Polyptychites tardescissus, Polyptychites frechi, Dichotomites (Prodichotomites) hollwedensis, Dichotomites mangyschlakensis, Dichotomites (Dichotomites) romani), Dichotomites (Dichotomites) krausei
Synonymy list
| Year | Name and author |
|---|---|
| 1909 | Dichotomites (Dichotomites) Koenen |
| 2006 | Dichotomites (Dichotomites) Alsen p. 112 |
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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. †Dichotomites (Dichotomites) Koenen 1909
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†Dichotomites (Dichotomites) bidichotomus d'Orbigny 1841
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Invalid names: Amundiptychites chatangensis Golbert and Klimova 1983 [synonym], Amundiptychites sachsi Golbert and Klimova 1983 [synonym], Dichotomites (Dichotomites) involutus Burdykina 1983 [synonym], Dichotomites (Dichotomites) romani Kemper 1978 [synonym], Dichotomites (Prodichotomites) hollwedensis Kemper 1978 [synonym], Dichotomites mangyschlakensis Luppov 1983 [synonym], Dichotomites toryschensis Luppov 1983 [synonym], Polyptychites frechi Koenen 1902 [synonym], Polyptychites tardescissus Koenen 1902 [synonym], Polyptychites terscissus Koenen 1902 [synonym], Ringnesiceras (Elleficeras) ellefense Kemper and Jeletzky 1979 [synonym]
†Dichotomites (Dichotomites) krausei Kemper 1978
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Early/Lower Valanginian or 137.05000 to 132.60000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Valanginian | Greenland | Dichotomites krausei (83686) | |
| Late/Upper Valanginian | Greenland | Dichotomites bidichotomites (83708) | |
| Late/Upper Valanginian | Poland (Gmina Tomaszów Mazowiecki) | Dichotomites krausei (192529) | |
| Late/Upper Valanginian | Canada (Northwest Territories) | Prodichotomites hollwedensis (87527) Ringnesiceras ellefense (87556 87557) | |
| Late/Upper Valanginian | Russian Federation | Dichotomites involutus (65459) Polyptychites bidichotomus (189643 189644 189662 189663 189664 189666) | |
| Valanginian | Svalbard and Jan Mayen | Polyptychites bidichotomus (211954) |