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Dichotomites (Dichotomites) bidichotomus

Cephalopoda - Ammonitida - Polyptychitidae

Taxonomy
Ammonites bidichotomus was named by d'Orbigny (1841). It is not a trace fossil. It is the type species of Dichotomites, Dichotomites (Dichotomites).

It was recombined as Polyptychites (Dichotomites) bidichotomus by Bogomolov (1989); it was recombined as Dichotomites bidichotomus by Marek (1989); it was recombined as Dichotomites (Dichotomites) bidichotomus by Alsen (2006).

Synonyms
Synonymy list
YearName and author
1841Ammonites bidichotomus d'Orbigny
1902Polyptychites frechi Koenen
1902Polyptychites tardescissus Koenen
1902Polyptychites terscissus Koenen
1978Dichotomites (Dichotomites) romani Kemper
1978Dichotomites (Prodichotomites) hollwedensis Kemper
1979Ringnesiceras (Elleficeras) ellefense Kemper and Jeletzky pp. 11, 12 figs. pl. 1, fig. 3
1983Dichotomites (Dichotomites) involutus Burdykina
1983Amundiptychites chatangensis Golbert and Klimova
1983Amundiptychites sachsi Golbert and Klimova
1983Dichotomites mangyschlakensis Luppov
1983Dichotomites toryschensis Luppov
1988Prodichotomites hollwedensis Jeletzky and Kemper p. 130
1988Ringnesiceras (Elleficeras) ellefense Jeletzky and Kemper p. 209 figs. Pl 60, figs 1A,B,3A-D; text-figs 61e
1989Polyptychites (Dichotomites) bidichotomus Bogomolov p. 63 figs. Pl 25, figs 1-3; pl 26; pl 27; pl 28, fig 1; pl 29, fig 2; pl 32, fig 4; pl 33, fig 2; pl 34, fig 4;
1989Dichotomites bidichotomus Marek
2006Dichotomites (Dichotomites) bidichotomus Alsen p. 112

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
subclassAmmonoidea()
RankNameAuthor
orderAmmonitidaHaeckel 1866
suborderAmmonitinaHyatt 1889
superfamilyPerisphinctaceaeSteinman 1890
familyPolyptychitidaeWedekind 1918
subfamilyPolyptychitinaeWedekind 1918
genusDichotomitesKoenen 1909
subgenusDichotomitesKoenen 1909
speciesbidichotomus(d'Orbigny 1841)

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.

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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]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragoniteo
Environment: marinec
Locomotion: fast-movingo
Life habit: nektonico
Diet: carnivoreo
Vision: well-developedc
Created: 2005-01-28 02:27:03
Modified: 2009-10-08 14:14:55
Source: o = order, c = class
References: Kiessling 2003, Kiessling 2004

Age range: Valanginian or 137.05000 to 132.60000 Ma

Collections (11 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Valanginian137.05 - 132.6Russian Federation Dichotomites involutus (65459) Polyptychites bidichotomus (189643 189644 189662 189663 189664 189666)
Late/Upper Valanginian137.05 - 132.6Canada (Northwest Territories) Prodichotomites hollwedensis (87527) Ringnesiceras ellefense (87556 87557)
Valanginian137.05 - 132.6Svalbard and Jan Mayen Polyptychites bidichotomus (211954)