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Dichotomites (Prodichotomites)
Taxonomy
Prodichotomites was named by Kemper (1971).
It was synonymized subjectively with Polyptychites by Bogomolov (1989); it was reranked as Dichotomites (Prodichotomites) by Alsen (2006).
It was assigned to Polyptychitinae by Jeletzky and Kemper (1988) and Lukeneder (2004); and to Dichotomites by Alsen (2006).
It was synonymized subjectively with Polyptychites by Bogomolov (1989); it was reranked as Dichotomites (Prodichotomites) by Alsen (2006).
It was assigned to Polyptychitinae by Jeletzky and Kemper (1988) and Lukeneder (2004); and to Dichotomites by Alsen (2006).
Subtaxa
Dichotomites (Prodichotomites) amundensis, Dichotomites (Prodichotomites) crassus, Dichotomites (Prodichotomites) ellefensis, Dichotomites (Prodichotomites) flexicosta (syn. Polyptychites gradatus, Neocraspedites speetonensis), Dichotomites (Prodichotomites) mackneyi, Dichotomites (Prodichotomites) polytomus (syn. Polyptychites ramulosus), Prodichotomites complanatus, Prodichotomites fissuratus, Prodichotomites glaber, Prodichotomites grotriani (syn. Olcostephanus obsoletecostatus), Prodichotomites ivanovi, Prodichotomites perovalis, Prodichotomites pfaffi, Prodichotomites robustus, Prodichotomites undulatus, Ringnesiceras (Ringnesiceras)
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1971 | Prodichotomites Kemper |
| 1979 | Ringnesiceras Kemper and Jeletzky p. 5 |
| 1988 | Prodichotomites Jeletzky and Kemper p. 130 |
| 1988 | Ringnesiceras Jeletzky and Kemper p. 198 |
| 2004 | Prodichotomites Lukeneder p. 51 |
| 2006 | Dichotomites (Prodichotomites) Alsen p. 113 |
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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 (Prodichotomites) Kemper 1971
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†Dichotomites (Prodichotomites) amundensis Kemper and Jeletzky 1979
†Dichotomites (Prodichotomites) crassus Kemper 1978
†Dichotomites (Prodichotomites) ellefensis Kemper and Jeletzky 1979
†Dichotomites (Prodichotomites) flexicosta Koenen 1902
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Invalid names: Neocraspedites speetonensis Spath 1924 [synonym], Polyptychites gradatus Koenen 1902 [synonym]
†Dichotomites (Prodichotomites) mackneyi Alsen 2006
†Dichotomites (Prodichotomites) polytomus Koenen 1902
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Invalid names: Polyptychites ramulosus Koenen 1902 [synonym]
†Prodichotomites complanatus Koenen 1902
†Prodichotomites fissuratus Koenen 1902
†Prodichotomites glaber Jeletzky and Kemper 1988
†Prodichotomites grotriani Neumayr and Uhlig 1881
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Invalid names: Olcostephanus obsoletecostatus Neumayr and Uhlig 1881 [synonym]
†Prodichotomites ivanovi Aristov 1974
†Prodichotomites perovalis Koenen 1902
†Prodichotomites pfaffi Jeletzky and Kemper 1988
†Prodichotomites robustus Jeletzky and Kemper 1988
†Prodichotomites undulatus Koenen 1902
Invalid names: Ringnesiceras Kemper and Jeletzky 1979 [synonym]
Diagnosis
No diagnoses are available