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Amaltheus
Taxonomy
Amaltheus was named by de Montfort (1808) [Sepkoski's age data: J Plie-u Sepkoski's reference number: 302]. It is not extant.
It was reranked as Ammonites (Amaltheus) by Etheridge (1892).
It was assigned to Ammonites by Etheridge (1892); to Ammonoidea by Sepkoski (2002); to Amaltheidae by Howarth (1955), Frebold (1970), Smith and Tipper (1996), Géczy and Meister (1998), Howarth (2013); and to Amaltheinae by Meister and Friebe (2003), Nakada et al. (2021).
It was reranked as Ammonites (Amaltheus) by Etheridge (1892).
It was assigned to Ammonites by Etheridge (1892); to Ammonoidea by Sepkoski (2002); to Amaltheidae by Howarth (1955), Frebold (1970), Smith and Tipper (1996), Géczy and Meister (1998), Howarth (2013); and to Amaltheinae by Meister and Friebe (2003), Nakada et al. (2021).
Species
A. (Amaltheus), A. (Pseudoamaltheus), A. bifurcus, A. bondonniensis, A. gibbosus (syn. A. turgidus), A. margaritatus (syn. Ammonites acutus, Ammonites foliaceus, Ammonites sedgwickii, Ammonites amaltheus), A. orientalis, A. repressus, A. reticularis, A. salebrosum (syn. A. postremus), A. stokesi, A. striatus (syn. Ammonites depressus), A. subnodosus (syn. Ammonites nodosus), A. viligaensis
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1808 | Amaltheus de Montfort |
| 1892 | Ammonites (Amaltheus) Etheridge p. 493 figs. pl. 37, fig. 3 |
| 1932 | Proamaltheus Lange |
| 1955 | Amaltheus Howarth |
| 1968 | Nordamaltheus Repin |
| 1970 | Amaltheus Frebold |
| 1976 | Amaltheus (Proamaltheus) Dagis |
| 1996 | Amaltheus Smith and Tipper p. 51 |
| 1998 | Amaltheus Géczy and Meister |
| 2002 | Amaltheus Sepkoski |
| 2003 | Amaltheus Meister and Friebe |
| 2013 | Amaltheus Howarth p. 58 |
| 2021 | Amaltheus Nakada et al. |
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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. †Amaltheus de Montfort 1808
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Subg. †Amaltheus (Amaltheus) de Montfort 1808
Subg. †Amaltheus (Pseudoamaltheus) Frebold 1922
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†Amaltheus (Pseudoamaltheus) engelhardti d'Orbigny 1844
†Amaltheus bifurcus Howarth 1958
†Amaltheus bondonniensis Meister 1986
†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 stokesi Sowerby 1818
†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]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 37 | 12.2 | 6.16 | 28.6 | 12.7 | 5.62 | |
| shell diameter | 37 | 28.8 | 14.5 | 68.7 | 31.6 | 13.0 | |
| shell inflation | 37 | 8.96 | 3.35 | 23.2 | 9.23 | 4.38 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Kunae to the top of the Early/Lower Toarcian or 185.10000 to 182.90000 Ma
Collections (185 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Jurassic | Canada (British Columbia) | A. stokesi (199612 199677 199678 199685 199693) | |
| Late/Upper Sinemurian - Late/Upper Pliensbachian | Austria | A. stokesi (218932) | |
| Davoei - Margaritatus | France | A. stokesi (147952 147953) A. stokesi, A. bifurcus, A. bondonniensis (148091) A. stokesi, A. bondonniensis (148078 148106) | |
| Early/Lower Pliensbachian | Canada (British Columbia) | A. margaritatus, A. stokesi (200149) | |
| Ibex - Margaritatus | France | A. stokesi (147794) | |
| Late/Upper Pliensbachian | Japan (Yamaguchi) | A. margaritatus (222658) A. stokesi (222657) | |
| Late/Upper Pliensbachian | Japan (Toyama) | A. margaritatus (222654) A. margaritatus, A. stokesi (222655) A. margaritatus, A. stokesi, A. repressus, A. orientalis (222651) A. orientalis (222652) A. sp., A. margaritatus, A. stokesi, A. repressus (222653) | |
| Late/Upper Pliensbachian | Canada (Alberta) | A. sp. (53706 53732) A. stokesi (4879) | |
| Late/Upper Pliensbachian | Austria | A. margaritatus (218912) A. margaritatus, A. stokesi (218902) | |
| Late/Upper Pliensbachian | United Kingdom (Yorkshire) | A. sp., A. margaritatus, A. subnodosus (219474) | |
| Late/Upper Pliensbachian | Italy (Varese) | A. margaritatus (37504) | |
| Late/Upper Pliensbachian | Canada (Yukon) | A. sp. (197184) A. stokesi (197542) | |
| Late/Upper Pliensbachian | Canada (British Columbia) | A. margaritatus (53611 53767) A. sp. (53102 53663) A. stokesi (53106 53385 53768 198420 198484 198485 198492 198500 200429) | |
| Late/Upper Pliensbachian | Russian Federation | A. complanatus, A. margaritatus, A. viligaensis (129268) A. sp. (129267 129823) A. sp., A. margaritatus, A. stokesi (129673 129676) A. sp., A. stokesi (129821 129822) A. viligaensis (129269) | |
| Late/Upper Pliensbachian | Germany (Bavaria) | A. engelhardti, Pleuroceras salebrosum (51276) | |
| Late/Upper Pliensbachian | United Kingdom (Gloucestershire) | A. clevelandicus, A. stokesi (204120) | |
| Late/Upper Pliensbachian | Japan (Niigata) | A. margaritatus, A. stokesi (222656) | |
| Late/Upper Pliensbachian | France | A. margaritatus (210791) A. margaritatus, A. gibbosus (210792) A. sp. (210788 210790) A. sp., A. margaritatus, A. gibbosus (210789) | |
| Margaritatus | Iran | A. margaritatus (196955) A. margaritatus, A. stokesi, A. subnodosus (196953) | |
| Margaritatus | Germany (Niedersachsen) | A. gibbosus (126943) A. sp. (126925) A. stokesi (126924) | |
| Margaritatus | United Kingdom (Yorkshire) | A. margaritatus, A. subnodosus, A. striatus (222170) A. stokesi (222171 222172 222177 222178) A. subnodosus (222169) | |
| Margaritatus | Canada (Yukon) | A. stokesi (114779) | |
| Margaritatus | Germany | A. margaritatus (159247) | |
| Margaritatus | Austria | A. margaritatus (145298) A. margaritatus, A. stokesi (145292) A. stokesi (145287) | |
| Margaritatus | France | A. bifurcus (148197) A. gloriosus, A. margaritatus, A. subnodosus (140905 148032) A. margaritatus (124107 124108 124109 140734 146644 146646 147786 148116 148117) A. margaritatus, A. engelhardti (148120) A. margaritatus, A. gibbosus (146645 146647) A. sp. (147791 148036 148177) A. sp., A. margaritatus, A. gibbosus (161631) A. stokesi (146352 146354 146355 146499 146603 146605 147770 147951 148001 148002 148003 148004 148033 148037 148049 148050 148051 148098 148102 148133 148136 148195) A. stokesi, A. bifurcus (148132) A. subnodosus (147948) | |
| Margaritatus | United Kingdom | A. gibbosus (222206) A. margaritatus (222204 222207) A. margaritatus, A. engelhardti (222201) A. margaritatus, A. engelhardti, A. gibbosus (222203) A. margaritatus, A. subnodosus (218417 218418 218419) A. margaritatus, A. subnodosus, A. striatus (222209) A. sp., A. margaritatus, A. gibbosus (218420 218421 218422) A. stokesi (218416 222213 222216 222217 222218 222219) A. stokesi, A. subnodosus, A. striatus (222210) A. subnodosus, A. striatus (222208) | |
| Margaritatus | Hungary | A. bifurcus (109146 109501 109528) A. margaritatus (109106 109561 109689) A. stokesi (109152 109499 109691 109692 109694) | |
| Margaritatus | Spain (Aragon) | A. sp. (146754) | |
| Margaritatus - Spinatum | France | A. margaritatus (148115) | |
| Pliensbachian | USA (Alaska) | A. sp. (5225) | |
| Pliensbachian | Canada (Yukon) | A. bifurcus (34203) A. sp. (34208) A. stokesi (53590) A. stokesi, A. bifurcus (34183 34222) | |
| Pliensbachian | Hungary | A. margaritatus (64313) | |
| Pliensbachian | Switzerland | A. sp., A. margaritatus (58314) | |
| Pliensbachian | Romania | A. stokesi (221056) | |
| Pliensbachian | France | A. sp. (106348) | |
| Spinatum | Canada (British Columbia) | A. viligaensis (33277) | |
| Spinatum | United Kingdom | A. margaritatus, Pleuroceras salebrosum (218423) Pleuroceras salebrosum (218424) | |
| Spinatum | United Kingdom (Yorkshire) | A. margaritatus (222168) A. reticularis (222166 222183 222188) | |
| Spinatum | Germany | A. sp. (228498) | |
| Spinatum | France | A. margaritatus, A. salebrosum (146651) A. salebrosum (146648 146649) | |
| Spinatum | Spain (Cantabria) | A. margaritatus (222233 222234) | |
| Late/Upper Pliensbachian - Early/Lower Toarcian | Switzerland | A. margaritatus (58315) | |
| Kunae | Canada (Alberta) | A. stokesi (197326 197681) | |
| Kunae | Canada (British Columbia) | A. stokesi (33119 33143 200150) | |
| Kunae | USA (Alaska) | A. sp. (132745) | |
| Kunae | Canada (Yukon) | A. margaritatus, A. stokesi (114775) A. stokesi (114776 114777 114781) | |
| Carlottense | Canada (British Columbia) | A. margaritatus (200280) |