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Pachydiscus (Pachydiscus)

Cephalopoda - Ammonitida - Pachydiscidae

Taxonomy
Pachydiscus (Pachydiscus) was named by Zittel (1884).

It was assigned to Pachydiscus by Henderson (1970), Morozumi (1985), Kennedy and Summesberger (1986), Macellari (1986), Kennedy (1986), Kennedy and Summesberger (1987), Cobban and Kennedy (1992), Ward and Kennedy (1993), Kennedy and Cobban (1993), Kennedy and Cobban (1993), Kennedy (1993), Kennedy and Cobban (1994), Kennedy (1995), Kennedy (1995), Kennedy and Kaplan (1995), Kennedy and Bilotte (1995), Kennedy and Cobban (1997), Kennedy (1999), Niebuhr et al. (2016) and Jagt et al. (2019).

Subtaxa
Pachydiscus (Pachydiscus) arkansanus, Pachydiscus (Pachydiscus) australis, Pachydiscus (Pachydiscus) awajiensis, Pachydiscus (Pachydiscus) cayeuxi, Pachydiscus (Pachydiscus) complanatus, Pachydiscus (Pachydiscus) dossantosi, Pachydiscus (Pachydiscus) duelmensis, Pachydiscus (Pachydiscus) egertoni (syn. Parapachydiscus coalingensis, Ammonites ganesa), Pachydiscus (Pachydiscus) gutierrezi, Pachydiscus (Pachydiscus) haldemsis (syn. Ammonites auritocostatus, Pachydiscus koeneni, Pachydiscus kaliszanensis), Pachydiscus (Pachydiscus) hazzardi, Pachydiscus (Pachydiscus) jacquoti (syn. Pachydiscus llareni, Pachydiscus (Pachydiscus) llareni), Pachydiscus (Pachydiscus) jeani, Pachydiscus (Pachydiscus) kamishakensis, Pachydiscus (Pachydiscus) neubergicus (syn. Ammonites chrishna), Pachydiscus (Pachydiscus) noetlingi, Pachydiscus (Pachydiscus) oldhami, Pachydiscus (Pachydiscus) ootacodensis (syn. Pachydiscus (Pachydiscus) hornbyense), Pachydiscus (Pachydiscus) paulsoni, Pachydiscus (Pachydiscus) rogeri, Pachydiscus (Pachydiscus) ultimus, Pachydiscus (Pachydiscus) yama
Species lacking formal opinion data
Pachydiscus gollevilensis, Pachydiscus japonicus, Pachydiscus vaju

Synonymy list
YearName and author
1884Pachydiscus (Pachydiscus) Zittel
1970Pachydiscus (Pachydiscus) Henderson p. 61
1985Pachydiscus (Pachydiscus) Morozumi p. 17
1986Pachydiscus (Pachydiscus) Kennedy p. 161
1986Pachydiscus (Pachydiscus) Kennedy and Summesberger p. 188
1986Pachydiscus (Pachydiscus) Macellari p. 46
1987Pachydiscus (Pachydiscus) Kennedy and Summesberger p. 29
1992Pachydiscus (Pachydiscus) Cobban and Kennedy p. 69
1993Pachydiscus (Pachydiscus) Kennedy p. 103
1993Pachydiscus (Pachydiscus) Kennedy and Cobban p. 411
1993Pachydiscus (Pachydiscus) Ward and Kennedy p. 30
1994Pachydiscus (Pachydiscus) Kennedy and Cobban p. 1287
1995Pachydiscus (Pachydiscus) Kennedy p. 243
1995Pachydiscus (Pachydiscus) Kennedy and Bilotte p. 364
1995Pachydiscus (Pachydiscus) Kennedy and Kaplan p. 27
1997Pachydiscus (Pachydiscus) Kennedy and Cobban p. 63
1999Pachydiscus (Pachydiscus) Kennedy p. 648
2016Pachydiscus (Pachydiscus) Niebuhr et al. p. 211
2019Pachydiscus (Pachydiscus) Jagt et al. p. 591

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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

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. †Pachydiscus (Pachydiscus) Zittel 1884
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†Pachydiscus (Pachydiscus) australis Henderson and McNamara 1985
†Pachydiscus (Pachydiscus) cayeuxi de Grossouvre 1894
+
Invalid names: Ammonites ganesa Forbes 1846 [synonym], Parapachydiscus coalingensis Anderson 1958 [synonym]
†Pachydiscus (Pachydiscus) gutierrezi Salazar et al. 2010
+
Invalid names: Ammonites auritocostatus Schlüter 1872 [synonym], Pachydiscus kaliszanensis Nowak 1913 [synonym], Pachydiscus koeneni de Grossouvre 1894 [synonym]
+
Invalid names: Pachydiscus (Pachydiscus) llareni Wiedmann 1960 [synonym], Pachydiscus llareni Wiedmann 1960 [synonym]
†Pachydiscus (Pachydiscus) jeani de Grossouvre 1894
+
Invalid names: Ammonites chrishna Forbes 1846 [synonym]
+
Invalid names: Pachydiscus (Pachydiscus) hornbyense Jones 1963 [synonym]
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height6741.86.00211.045.540.8
shell diameter6792.916.0501.0103.691.1
shell inflation6721.83.00124.025.021.5

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 Campanian to the top of the Early/Lower Maastrichtian or 83.60000 to 66.00000 Ma

Collections (187 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Santonian85.8 - 83.5France Pachydiscus cayeuxi, Pachydiscus jeani (179587) Pachydiscus jeani (179603 179604)
Campanian83.6 - 72.1Turkey Pachydiscus haldemsis (130883) Pachydiscus oldhami, Pachydiscus haldemsis (130884)
Campanian83.6 - 72.1USA (California) Parapachydiscus stanislausensis (86859)
Campanian83.6 - 72.1USA (Alaska) Pachydiscus kamishakensis (88818 88821)
Campanian83.6 - 72.1Canada (British Columbia) Pachydiscus hornbyense (158387)
Early/Lower Campanian83.5 - 70.6France Pachydiscus complanatus (165827) Pachydiscus duelmensis (165821 165822)
Early/Lower Campanian83.5 - 70.6Germany (Westfalen) Ammonites duelmensis (165365 165371) Pachydiscus duelmensis (165372 165373)
Early/Lower Campanian83.5 - 70.6USA (Texas) Pachydiscus paulsoni (221086)
Early/Lower Campanian83.5 - 70.6USA (New Jersey) Pachydiscus sp. (88606)
Late/Upper Campanian83.5 - 70.6Oman Pachydiscus dossantoi (67455)
Late/Upper Campanian83.5 - 70.6Iran Pachydiscus haldemsis (174522 174535)
Late/Upper Campanian83.5 - 70.6France (Landes) Pachydiscus haldemsis (38808 38811 213818 213867 214028) Pachydiscus oldhami (213776 213777 213821)
Late/Upper Campanian83.5 - 70.6Belgium Pachydiscus oldhami (82895)
Late/Upper Campanian83.5 - 70.6USA (Alaska) Pachydiscus hazzardi (158373 158384 158385) Pachydiscus kamishakensis (63935 158217 158233 158236 158237 158241 158274 158275 158312 158374 158378) Pachydiscus ootacodensis (158290 158295 158296) Pachydiscus ootacodensis, Pachydiscus kamishakensis (88816 158227) Pachydiscus ootacodensis, Pachydiscus kamishakensis, Pachydiscus hazzardi (158377)
Late/Upper Campanian83.5 - 70.6USA (California) Pachydiscus ootacodensis (225372)
Late/Upper Campanian83.5 - 70.6USA (Delaware) Pachydiscus sp. (83133)
Late/Upper Campanian83.5 - 70.6France Pachydiscus haldemsis (165839 165840) Pachydiscus oldhami (165828 165829 165830 165831 165832 165833 165834 165835 165836 165837 165838) Pachydiscus sp. (165841)
Late/Upper Campanian83.5 - 70.6Germany Pachydiscus koeneni (64128 64142 64143 64181) Pachydiscus neubergicus (221859)
Late/Upper Campanian83.5 - 70.6Japan Pachydiscus awajiensis (176805 176806) Pachydiscus sp. (176807)
Late/Upper Campanian83.5 - 70.6Spain Pachydiscus oldhami (67549)
Late/Upper Campanian83.5 - 70.6Ukraine Pachydiscus haldemsis (183317)
Late/Upper Campanian83.5 - 70.6USA (Arkansas) Pachydiscus arkansanus (83044) Pachydiscus sp. (83054 83092 83094)
Late/Upper Campanian83.5 - 70.6Austria Pachydiscus haldemsis (48008)
Late/Upper Campanian83.5 - 70.6USA (Texas) Pachydiscus paulsoni (73635) Parapachydiscus arkansanus (7481 7568)
Late/Upper Campanian83.5 - 70.6Nigeria Pachydiscus egertoni (69626)
Middle Campanian - Late/Upper Campanian83.5 - 70.6USA (Delaware) Pachydiscus sp. (35048)
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0United Arab Emirates Pachydiscus dossantoi (175467)
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0USA (California) Pachydiscus egertoni (44266) Pachydiscus ootacodensis (158103 185401 225732)
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0Germany Pachydiscus neubergicus (221911)
Maastrichtian72.1 - 66.0USA (Texas) Parapachydiscus arkansanus (7480 7536 7550)
Maastrichtian72.1 - 66.0Ukraine Pachydiscus neubergicus (183326)
Maastrichtian72.1 - 66.0Australia (Western Australia) Pachydiscus australis (83850 83854 83855 83860 83863 157777 157778 157781 157784 157785 157787 157788 157789 157790) Pachydiscus neubergicus, Pachydiscus australis (83845 83851 83852 83853 83857 83862 157786 157792)
Maastrichtian72.1 - 66.0Antarctica Pachydiscus ultimus (82950 82952 82963 82973 82974 82981)
Maastrichtian72.1 - 66.0Antarctica (Seymour Island) Pachydiscus ultimus (63513)
Maastrichtian72.1 - 66.0Mexico (Baja California) Parapachydiscus ootacodensis (158099)
Maastrichtian72.1 - 66.0Denmark Pachydiscus neubergicus (67404 67405 67410 67411)
Maastrichtian72.1 - 66.0USA (California) Pachydiscus sp. (185758) Parapachydiscus coalingensis (83774) Parapachydiscus ganesa (215321)
Maastrichtian72.1 - 66.0USA (New Jersey) Pachydiscus neubergicus (83064)
Maastrichtian - Late/Upper Maastrichtian72.1 - 66.0Brazil (Paraíba) Parapachydiscus dossantosi (88070)
Early/Lower Maastrichtian70.6 - 66.0Antarctica (Seymour Island) Pachydiscus ootacodensis (3158)
Early/Lower Maastrichtian70.6 - 66.0Oman Pachydiscus dossantoi (175465 175466) Pachydiscus neubergicus (175469)
Early/Lower Maastrichtian70.6 - 66.0Germany Pachydiscus neubergicus (213668)
Early/Lower Maastrichtian70.6 - 66.0Antarctica Pachydiscus ootacodensis (158435 158453 158454)
Early/Lower Maastrichtian70.6 - 66.0Nigeria Pachydiscus dossantosi (69625)
Early/Lower Maastrichtian70.6 - 66.0Austria Pachydiscus neubergicus (83619)
Early/Lower Maastrichtian70.6 - 66.0Bulgaria Pachydiscus neubergicus (188088 188089 188090)
Early/Lower Maastrichtian70.6 - 66.0USA (California) Pachydiscus egertoni (83789 225933) Pachydiscus sp. (86817) Parapachydiscus coalingensis (86821)
Early/Lower Maastrichtian70.6 - 66.0France (Landes) Pachydiscus haldemsis (214180) Pachydiscus neubergicus (214124 214168 214207)
Early/Lower Maastrichtian70.6 - 66.0Belgium Pachydiscus neubergicus (82909) Pachydiscus sp., Pachydiscus neubergicus (82892)
Early/Lower Maastrichtian70.6 - 66.0Egypt Pachydiscus neubergicus (224160 224161)
Early/Lower Maastrichtian70.6 - 66.0Netherlands Pachydiscus jacquoti (82927)
Early/Lower Maastrichtian70.6 - 66.0Ukraine Pachydiscus neubergicus (183322)
Late/Upper Maastrichtian70.6 - 66.0Antarctica (Seymour Island) Pachydiscus ootacodensis (166009) Pachydiscus riccardii (166011) Pachydiscus ultimus (3169 166012)
Late/Upper Maastrichtian70.6 - 66.0India Ammonites egertoni, Ammonites chrishna, Ammonites ganesa, Ammonites yama (41428)
Late/Upper Maastrichtian70.6 - 66.0South Africa Pachydiscus australis (166277)
Late/Upper Maastrichtian70.6 - 66.0Antarctica Pachydiscus ultimus (158427 158446 158447 158448 158449 158450)
Late/Upper Maastrichtian70.6 - 66.0Chile Pachydiscus gutierrezi (165497 165507) Pachydiscus jacquoti (165499) Pachydiscus jacquoti, Pachydiscus gutierrezi (165491 165492)
Late/Upper Maastrichtian70.6 - 66.0France Pachydiscus jacquoti (83652 165598 165599) Pachydiscus sp., Pachydiscus jacquoti (83648)
Late/Upper Maastrichtian70.6 - 66.0Oman Pachydiscus neubergicus (175468)
Late/Upper Maastrichtian70.6 - 66.0USA (Texas) Pachydiscus jacquoti (211605)
Late/Upper Maastrichtian70.6 - 66.0Jordan Pachydiscus dossantosi (170239)
Late/Upper Maastrichtian70.6 - 66.0France (Landes) Pachydiscus jacquoti (214195)