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Pachydiscus

Cephalopoda - Ammonitida - Pachydiscidae

Species lacking formal opinion data

Synonyms
Synonymy list
YearName and author
1884Pachydiscus Zittel
1900Parapachydiscus Hyatt p. 570
1921Pachydiscus (Parapachydiscus) Yabe p. 57
1947Pachydiscus (Parapachydiscus) Reeside p. 3
1955Pseudomenuites Matsumoto p. 169
1955Pachydiscus Reyment p. 16
1958Joaquinites Anderson p. 214
1959Pachydiscus Matsumoto p. 41
1970Pachydiscus Henderson p. 61
1985Pachydiscus Morozumi p. 17
1985Pachydiscus Zaborski p. 19
1986Pachydiscus Kennedy p. 161
1986Pachydiscus Kennedy and Summesberger p. 188
1986Pachydiscus Macellari p. 46
1987Pachydiscus Kennedy and Summesberger p. 29
1992Pachydiscus Cobban and Kennedy p. 69
1993Pachydiscus Kennedy p. 103
1993Pachydiscus Kennedy and Cobban p. 411
1993Pachydiscus Ward and Kennedy p. 30
1994Pachydiscus Kennedy and Cobban p. 1287
1995Pachydiscus Kennedy p. 243
1995Pachydiscus Kennedy and Bilotte p. 364
1995Pachydiscus Kennedy and Kaplan p. 27
1996Pachydiscus Kennedy and Cobban p. 799
1997Pachydiscus Kennedy and Cobban p. 63
1999Pachydiscus Kennedy p. 648
2000Pachydiscus Arkadiev et al. p. 111
2001Pachydiscus Főzy p. 26
2002Pachydiscus Sepkoski
2005Pachydiscus Consoli and Stilwell p. 390
2007Pachydiscus Landman et al. p. 57
2007Pachydiscus Szives p. 129
2016Pachydiscus Niebuhr et al. p. 211
2016Pachydiscus Shigeta p. 343
2019Pachydiscus Jagt et al. p. 591

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classCephalopodaCuvier 1797
subclassAmmonoidea()
orderAmmonitida
suborderAmmonitinaHyatt 1889
superfamilyDesmoceratoidea(Zittel 1895)
familyPachydiscidaeSpath 1922
genusPachydiscusZittel 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.

G. †Pachydiscus Zittel 1884
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Subg. †Pachydiscus (Pachydiscus) Zittel 1884
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Pachydiscus (Pachydiscus) australis Henderson and McNamara 1985
Pachydiscus (Pachydiscus) cayeuxi de Grossouvre 1894
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Invalid names: Ammonites ganesa Forbes 1846 [synonym], Parapachydiscus coalingensis Anderson 1958 [synonym]
Pachydiscus (Pachydiscus) gutierrezi Salazar et al. 2010
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Invalid names: Ammonites auritocostatus Schlüter 1872 [synonym], Pachydiscus kaliszanensis Nowak 1913 [synonym], Pachydiscus koeneni de Grossouvre 1894 [synonym]
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Invalid names: Pachydiscus (Pachydiscus) llareni Wiedmann 1960 [synonym], Pachydiscus llareni Wiedmann 1960 [synonym]
Pachydiscus (Pachydiscus) jeani de Grossouvre 1894
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Invalid names: Ammonites chrishna Forbes 1846 [synonym]
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Invalid names: Pachydiscus (Pachydiscus) hornbyense Jones 1963 [synonym]
Pachydiscus armenicus Atabekian and Akopian 1969
Pachydiscus besairiei Basse 1930
Pachydiscus binodatus Whiteaves 1903
Pachydiscus buckhami Usher 1952
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Invalid names: Pachydiscus elkhornensis Usher 1952 [synonym], Parapachydiscus gabbi Anderson 1958 [synonym], Parapachydiscus panochensis Anderson 1958 [synonym]
Pachydiscus colligatus Binkhorst 1861
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Invalid names: Pachydiscus vandenbroecki de Grossouvre 1894 [synonym]
Pachydiscus epiplectus Redtenbacher 1873
Pachydiscus excelsus Matsumoto 1979
Pachydiscus flexuosus Matsumoto 1979
Pachydiscus gollevillensis d'Orbigny 1847
Pachydiscus gollevillensis armenicus Atabekian and Akopian 1969
Pachydiscus hauthali Paulcke 1907
Pachydiscus launayi de Grossouvre 1894
Pachydiscus levyi de Grossouvre 1894
Pachydiscus naumanni Yokoyama 1890
Pachydiscus neevesi Whiteaves 1903
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Invalid names: Parapachydiscus bidwelli Anderson 1958 [synonym]
Pachydiscus patagonicus Paulcke 1907
Pachydiscus peramplus Mantell 1822
Pachydiscus perfidus Grossouvre 1894
Pachydiscus precolligatus Collignon 1955
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Invalid names: Pachydiscus gignouxi Collignon 1955 [synonym]
Pachydiscus riccardi Macellari 1986
Pachydiscus stallauensis Imkeller 1901
Pachydiscus steinmanni Paulcke 1907
Pachydiscus subcompressus Matsumoto 1954
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Invalid names: Joaquinites fascicostatus Anderson 1958 [synonym]
Pachydiscus subrobustus Seunes 1892
Invalid names: Joaquinites Anderson 1958 [synonym], Parapachydiscus Hyatt 1900 [synonym], Pseudomenuites Matsumoto 1955 [synonym]
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height8946.66.00240.049.946.3
shell diameter89102.716.0508.0112.7102.7
shell inflation8923.53.00124.028.022.2

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 Coniacian to the top of the Late/Upper Maastrichtian or 89.80000 to 66.00000 Ma

Collections (355 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Late/Upper Cretaceous100.5 - 66.0USA (California) P. sp. (185733)
Early/Lower Turonian93.5 - 89.3France P. vaju, P. peramplus (82852)
Coniacian89.8 - 86.3USA (California) Parapachydiscus henleyensis (44270)
Coniacian89.8 - 86.3Haiti P. gardneri, P. woodringi (87735) P. sp. (88267) P. woodringi (87736)
Coniacian89.8 - 86.3Cameroon Parapachydiscus stallauensis (177976 209692)
Coniacian - Santonian89.8 - 83.6Chile P. hauthali, P. steinmanni, P. patagonicus (83695)
Santonian86.3 - 83.6USA (California) Parapachydiscus panochensis (44278) Parapachydiscus sp. (44279)
Early/Lower Santonian - Late/Upper Santonian85.8 - 83.5France P. sp. (69872)
Late/Upper Santonian85.8 - 83.5France P. cayeuxi, P. jeani (179587) P. jeani (179603 179604)
Late/Upper Santonian85.8 - 83.5Madagascar P. besairiei (232213)

Youngest occurrences

Time interval Ma Country or state PBDB collection number
Late/Upper Maastrichtian70.6 - 66.0Chile (Puerto Natales) P. gollevilensis (140919)
Late/Upper Maastrichtian70.6 - 66.0USA (Alabama) Parapachydiscus sp. (4197)
Late/Upper Maastrichtian70.6 - 66.0India Ammonites egertoni, Ammonites chrishna, Ammonites ganesa, Ammonites yama, Ammonites soma (41428)
Late/Upper Maastrichtian70.6 - 66.0Jordan P. dossantosi (170239)
Late/Upper Maastrichtian70.6 - 66.0USA (New Jersey) P. mokotibensis (178550)
Late/Upper Maastrichtian70.6 - 66.0Antarctica (Seymour Island) P. ootacodensis (166009) P. riccardi (3166) P. riccardii (166011) P. ultimus (166012) P. ultimus, P. riccardi (3169)
Late/Upper Maastrichtian70.6 - 66.0Ukraine P. gollevillensis (183324)
Late/Upper Maastrichtian70.6 - 66.0Oman P. neubergicus (175468)
Late/Upper Maastrichtian70.6 - 66.0South Africa P. australis (166277)
Late/Upper Maastrichtian - Early/Lower Paleocene70.6 - 61.7USA (New Jersey) P. sp. (26819)