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Pachydiscus

Cephalopoda - Ammonitida - Pachydiscidae

Taxonomy
Pachydiscus was named by Zittel (1884) [Sepkoski's age data: K Sant-u K Maes-u Sepkoski's reference number: 2,971].

It was assigned to Ammonoidea by Sepkoski (2002); and to Pachydiscidae by Reyment (1955), Matsumoto (1959), Henderson (1970), Morozumi (1985), Zaborski (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 (1996), Kennedy and Cobban (1997), Kennedy (1999), Arkadiev et al. (2000), Főzy (2001), Consoli and Stilwell (2005), Szives (2007), Landman et al. (2007), Shigeta (2016), Niebuhr et al. (2016) and Jagt et al. (2019).

Species
P. (Neodesmoceras), P. (Pachydiscus), P. (Parapachydiscus) gardneri, P. (Parapachydiscus) woodringi, P. armenicus, P. besairiei, P. binodatus, P. buckhami (syn. Parapachydiscus gabbi, P. elkhornensis, Parapachydiscus panochensis), P. colligatus (syn. P. vandenbroecki), P. epiplectus, P. excelsus, P. flexuosus, P. gollevillensis, P. hauthali, P. launayi, P. levyi, P. naumanni, P. neevesi (syn. Parapachydiscus bidwelli), P. patagonicus, P. peramplus, P. perfidus, P. precolligatus (syn. P. gignouxi), P. riccardi, P. stallauensis, P. steinmanni, P. subcompressus (syn. Joaquinites fascicostatus), P. subrobustus, Parapachydiscus abbotti, Parapachydiscus albuquerquei, Parapachydiscus arionis, Parapachydiscus athena, Parapachydiscus brasiliensis, Parapachydiscus bruneti, Parapachydiscus californicus, Parapachydiscus cortinaensis, Parapachydiscus diabloensis, Parapachydiscus endymion, Parapachydiscus eurydice, Parapachydiscus euzebioi, Parapachydiscus gettyi, Parapachydiscus henleyensis, Parapachydiscus hera, Parapachydiscus hermes, Parapachydiscus oceanus, Parapachydiscus orpheus, Parapachydiscus parahybensis, Parapachydiscus perseus, Parapachydiscus poseidon, Parapachydiscus psyche, Parapachydiscus reedsi, Parapachydiscus stanislausensis, Parapachydiscus sumneri, Parapachydiscus williamsoni
Species lacking formal opinion data
P. gollevilensis, P. japonicus, P. suciaensis, P. vaju

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