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Pachydiscus (Pachydiscus) haldemsis

Cephalopoda - Ammonitida - Pachydiscidae

Taxonomy
Ammonites haldemsis was named by Schluter (1867).

It was recombined as Pachydiscus haldemsis by Arkadiev et al. (2000) and Courville and Odin (2001); it was recombined as Pachydiscus (Pachydiscus) haldemsis by Kennedy (1986) and Niebuhr et al. (2016).

Sister species lacking formal opinion data

Synonyms
Synonymy list
YearName and author
1867Ammonites haldemsis Schluter p. 19 figs. Pl 3, fig 1
1872Ammonites auritocostatus Schlüter p. 70 figs. Pl 22, figs 6,7
1894Pachydiscus koeneni de Grossouvre p. 178
1913Pachydiscus kaliszanensis Nowak p. 359 figs. Pl 40, fig 8
1986Pachydiscus (Pachydiscus) haldemsis Kennedy p. 45 figs. Pl 4, figs 1-3; pl 5, figs 7-14; text-figs 11A-D,F,G, 17
2000Pachydiscus haldemsis Arkadiev et al. p. 111 figs. Pl 13, figs 1-3
2001Pachydiscus haldemsis Courville and Odin p. 534 figs. Pl 3, figs 25,28; pl 6, fig 44
2016Pachydiscus (Pachydiscus) haldemsis Niebuhr et al. p. 211 figs. 7, 8A

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitida
suborderAmmonitinaHyatt 1889
superfamilyDesmoceratoidea(Zittel 1895)
familyPachydiscidaeSpath 1922
genusPachydiscusZittel 1884
subgenusPachydiscusZittel 1884
specieshaldemsis(Schluter 1867)

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: Ammonites auritocostatus Schlüter 1872 [synonym], Pachydiscus kaliszanensis Nowak 1913 [synonym], Pachydiscus koeneni de Grossouvre 1894 [synonym]
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height273.072.074.073.01.41
shell diameter2226.2215.0238.0226.516.3
shell inflation251.643.062.052.513.4

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: base of the Late/Upper Campanian to the top of the Early/Lower Maastrichtian or 83.50000 to 66.00000 Ma

Collections (18 total)


Time interval Ma Country or state Original ID and collection number
Campanian83.6 - 72.1Turkey Pachydiscus haldemsis (130883 130884)
Late/Upper Campanian83.5 - 70.6Austria Pachydiscus haldemsis (48008)
Late/Upper Campanian83.5 - 70.6France (Landes) Pachydiscus haldemsis (38808 38811 213818 213867 214028)
Late/Upper Campanian83.5 - 70.6Ukraine Pachydiscus haldemsis (183317)
Late/Upper Campanian83.5 - 70.6Iran Pachydiscus haldemsis (174522 174535)
Late/Upper Campanian83.5 - 70.6Germany Pachydiscus koeneni (64128 64142 64143 64181)
Late/Upper Campanian83.5 - 70.6France Pachydiscus haldemsis (165839 165840)
Early/Lower Maastrichtian70.6 - 66.0France (Landes) Pachydiscus haldemsis (214180)