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Epimayaites
Taxonomy
Epimayaites was named by Spath (1928) [Sepkoski's age data: J Oxfo-u]. It is not extant. Its type is Stephanoceras transiens.
It was assigned to Mayaitidae by Arkell et al. (1957), Helmstaedt (1969); to Ammonoidea by Thomson (1982), Sepkoski (2002); and to Mayaitinae by Alberti et al. (2015).
It was assigned to Mayaitidae by Arkell et al. (1957), Helmstaedt (1969); to Ammonoidea by Thomson (1982), Sepkoski (2002); and to Mayaitinae by Alberti et al. (2015).
Species
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1829 | Ammonites nepalensis Gray pp. Pl 160 figs. 1, 2 |
| 1928 | Epimayaites Spath |
| 1957 | Epimayaites Arkell et al. p. 298 |
| 1969 | Epimayaites Helmstaedt p. 72 |
| 1982 | Epimayites Thomson p. 28 |
| 2002 | Epimayaites Sepkoski |
| 2015 | Epimayaites Alberti et al. p. 98 |
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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. †Epimayaites Spath 1928
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†Epimayaites axonoides Spath 1928
†Epimayaites evolutus Spath 1928
†Epimayaites falcoides Spath 1928
†Epimayaites lautus Spath 1928
†Epimayaites lemoini Spath 1924
†Epimayaites polyphemus Waagen 1875
†Epimayaites smeei Spath 1928
†Epimayaites subtumidus Waagen 1875
†Epimayaites transiens Waagen 1875
†Epimayaites waageni Uhlig 1910
Invalid names: Stephanoceras nepalense Gray 1829 [nomen dubium]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 22 | 51.5 | 22.0 | 117.2 | 45.1 | 31.4 | |
| shell diameter | 22 | 106.7 | 44.9 | 252.5 | 96.0 | 64.4 | |
| shell inflation | 22 | 18.2 | 7.00 | 43.2 | 19.6 | 10.4 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Late/Upper Oxfordian to the top of the Late/Upper Tithonian or 157.90000 to 143.10000 Ma
Collections (41 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Callovian - Oxfordian | India | Mayaites smeei (68647) | |
| Early/Lower Oxfordian | India (Gujarat) | E. lemoini (163868) E. sp. (182020) E. sp. A, E. smeei (182038) E. transiens (182016) | |
| Middle Oxfordian | India (Gujarat) | E. axonoides (182027 182032) E. axonoides, E. transiens (182028) E. evolutus (182025 182026) E. sp. (46551) E. sp., E. lemoini, E. axonoides, E. evolutus, E. falcoides (182031) | |
| Middle Oxfordian | Eritrea | E. falcoides (209122) E. sp. (209121) | |
| Oxfordian | India | E. sp. (65886) | |
| Oxfordian | Madagascar | E. arenosus, E. lemoinei, E. subtumidus, E. transiens, E. lautus, E. falcoides (98177) E. lemoinei, E. axonoides, E. falcoides (98190) E. moreti, E. falcoides (98191) E. subfalcoides, E. lemoinei, E. moreti, E. sublautus, E. patella, E. axonoides, E. evolutus, E. falcoides (98213) Mayaites smeei (98182) | |
| Oxfordian | India (Gujarat) | E. falcoides (182035) E. lemoini (163873) E. lemoini, E. axonoides, E. transiens (182037) E. polyphemus (182022) E. sp. A (163874) E. sp., E. polyphemus, E. lemoini, E. lautus, E. falcoides (163869) E. transiens (163871) | |
| Oxfordian | China | E. lemoini (64863) | |
| Late/Upper Oxfordian | Madagascar (Menab) | E. falcoides (234236) | |
| Late/Upper Oxfordian | Madagascar (Atsimo-Andrefana) | E. axonoides (234262) E. patella, E. falcoides (234237) E. pruvosti, E. sornayi, E. transiens, E. lautus (234263) E. subfalcoides, E. lemoinei, E. moreti, E. sublautus, E. axonoides, E. evolutus, E. falcoides (234238) | |
| Late/Upper Oxfordian | Antarctica | Epimayites transiens (68360) | |
| Late/Upper Oxfordian | Madagascar | E. subfalcoides, E. falcoides (234235) | |
| Late/Upper Oxfordian | India (Gujarat) | E. axonoides (182034) E. lemoini (182030) E. subtumidus, E. falcoides (182029) | |
| Late/Upper Oxfordian - Early/Lower Kimmeridgian | India (Gujarat) | Stephanoceras subtumidum, Stephanoceras nepalense (234314) | |
| Kimmeridgian - Oxfordian | Yemen (Wadi Hajar) | E. sp. (2575) | |
| Late/Upper Tithonian | Nepal | E. waageni (142312) |