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Megalytoceras
Taxonomy
Megalytoceras was named by Buckman (1905) [Sepkoski's age data: J Toar-u J Bajo]. It is not extant. It is the type genus of Megalytoceratinae.
It was assigned to Ammonoidea by Sepkoski (2002); to Phylloceratinae by Pallini et al. (2004); and to Megalytoceratinae by Hoffmann (2010), Galácz and Kassai (2012) and Whicher et al. (2023).
It was assigned to Ammonoidea by Sepkoski (2002); to Phylloceratinae by Pallini et al. (2004); and to Megalytoceratinae by Hoffmann (2010), Galácz and Kassai (2012) and Whicher et al. (2023).
Species
Synonyms
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Synonymy list
Year | Name and author |
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1905 | Megalytoceras Buckman |
1957 | Asapholytoceras Arkell et al. p. L196 |
2002 | Asapholytoceras Sepkoski |
2002 | Megalytoceras Sepkoski |
2002 | Metrolytoceras Sepkoski |
2004 | Megalytoceras Pallini et al. p. 6 |
2010 | Megalytoceras Hoffmann p. 51 |
2012 | Megalytoceras Galácz and Kassai |
2023 | Megalytoceras Whicher et al. p. 239 |
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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. †Megalytoceras Buckman 1905
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†Megalytoceras confusum Buckman 1881
†Megalytoceras kasakovae Beznosov 1958
†Megalytoceras metretum Buckman 1923
†Megalytoceras rasile Vacek 1886
†Megalytoceras rubescens Dumortier 1874
†Megalytoceras trapeza Quenstedt 1886
Invalid names: Asapholytoceras [synonym], Metrolytoceras [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, c = class | |||||
References: Kiessling 2004, Kiessling 2003 |
Age range: base of the Early/Lower Aalenian to the top of the Early/Lower Bajocian or 175.60000 to 168.40000 Ma
Collections (19 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Concavum | United Kingdom (England) | M. confusum (229911 229918) M. confusum, M. metretum (229910 229919) M. confusum, M. metretum, M. trapeza (229917) M. rubescens (229924 229925) M. sp. (229926) | |
Early/Lower Aalenian | Spain | Lytoceras rasile (71713) | |
Late/Upper Aalenian | Ukraine (Transcarpathian) | M. sp. (197182) | |
Early/Lower Bajocian | Hungary | M. rubescens, M. kasakovae (220223 220224 220225) | |
Discites | United Kingdom (England) | M. confusum, M. trapeza (229916) M. metretum (229920 229921) | |
Laeviuscula | United Kingdom (England) | M. metretum (229922) | |
Sauzei | United Kingdom (England) | M. trapeza (229896 229923) |