Classification of the genus Amaltheus

G. †Amaltheus de Montfort 1808
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Subg. †Amaltheus (Amaltheus) de Montfort 1808
Subg. †Amaltheus (Pseudoamaltheus) Frebold 1922
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†Amaltheus bifurcus Howarth 1958
†Amaltheus bondonniensis Meister 1986
†Amaltheus gibbosus Schlotheim 1820
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Invalid names: Amaltheus turgidus Hyatt 1867 [synonym]
†Amaltheus margaritatus de Montford 1808
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Invalid names: Ammonites acutus Sowerby 1813 [synonym], Ammonites amaltheus Schlotheim 1813 [synonym], Ammonites foliaceus Giebel 1852 [synonym], Ammonites sedgwickii Buckman 1845 [synonym]
†Amaltheus orientalis Nakada et al. 2021
†Amaltheus repressus Dagis 1976
†Amaltheus reticularis Simpson 1843
†Amaltheus salebrosum Hyatt 1867
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Invalid names: Amaltheus postremus Mattei 1985 [synonym]
†Amaltheus stokesi Sowerby 1818
†Amaltheus striatus Howarth 1955
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Invalid names: Ammonites depressus Simpson 1843 [replaced]
†Amaltheus subnodosus Young and Bird 1828
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Invalid names: Ammonites nodosus Sowerby 1815 [replaced]
†Amaltheus viligaensis Tuchkov 1954
Invalid names: Nordamaltheus Repin 1968 [synonym], Proamaltheus Lange 1932 [synonym]