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Janassidae
Taxonomy
Janassidae was named by Jaekel (1899). It is not extant. Its type is Janassa.
It was assigned to Janassides by Jordan (1963); and to Petalodontiformes by Lund (1989), Nelson (2006), Ginter et al. (2010), Hodnett et al. (2023).
It was assigned to Janassides by Jordan (1963); and to Petalodontiformes by Lund (1989), Nelson (2006), Ginter et al. (2010), Hodnett et al. (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1899 | Janassidae Jaekel |
| 1963 | Janassidae Jordan p. 593 |
| 1989 | Janassidae Lund p. 359 |
| 2006 | Janassidae Nelson p. 43 |
| 2010 | Janassidae Ginter et al. p. 134 |
| 2023 | Janassidae Hodnett et al. p. 3 |
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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.
Fm. †Janassidae Jaekel 1899
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Subfm. †Cholodinae Hodnett et al. 2023
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G. †Cavusodus Itano 2023
G. †Cholodus John and Worthen 1875
G. †Ctenopetalus Agassiz 1837
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†Ctenopetalus bellulus Saint John and Worthen 1875
†Ctenopetalus limatulus Saint John and Worthen 1875
†Ctenopetalus medius Saint John and Worthen 1875
†Ctenopetalus vinosus Saint John and Worthen 1875
G. †Dactylodus
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†Dactylodus excavatus Saint John and Worthen 1866
†Dactylodus princeps Newberry and Worthen 1866
G. †Fissodus St. John and Worthen 1875
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Fissodus bifidus Saint John and Worthen 1875
†Fissodus dentatus Eastman 1903
†Fissodus inaequalis Stjohn and Worthen 1875
G. †Gamphacanthus Miller 1892
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†Gamphacanthus politus Newberry 1889
†Gamphacanthus uddeni Lindahl 1897
G. †Gomphacanthus Davis 1884
Subfm. †Janassinae Hodnett et al. 2023
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G. †Janassa
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†Janassa angularis Branson 1916
†Janassa bituminosa Schlotheim 1820
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Invalid names: Acrodus larva Agassiz 1839 [synonym], Byzenos latipinnatus Münster 1843 [synonym], Dictea striata Münster 1840 [synonym], Janassa angulata Münster 1839 [synonym], Janassa dictea Münster 1842 [synonym], Janassa humboldii Münster 1839 [synonym]
†Janassa brevis Newberry 1856
†Janassa clarki Lund 1989
†Janassa clavatus M'Coy 1848
†Janassa gurleiana Cope 1877
†Janassa imbricatus M'Coy 1848
†Janassa kochi Nielsen 1932
†Janassa korni Weigelt 1930
†Janassa linguaeformis Atthey 1868
†Janassa maxima Eastman 1903
†Janassa ordiana Cope 1881
†Janassa strigilina Cope 1881
†Janassa unguicula Eastman 1903
Invalid names: Byzenos Münster 1843 [synonym], Climaxodus McCoy 1848 [synonym], Dictea Münster 1840 [synonym]
G. †Petalodopsis Barkas 1874
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†Petalodopsis mirabilis Barkas 1874
†Petalodopsis tripartitis Davis 1833
G. †Phoderacanthus Davis 1883
G. †Platacanthus M'Coy 1848
G. †Pnigeacanthus St John and Worthen 1883
G. †Stichacanthus Koninck 1878
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†Stichacanthus coemansi Koninck 1878
†Stichacanthus tortworthensis Davis 1883
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, subp = subphylum | |||||
| References: Carroll 1988, Hendy et al. 2009, Wagner 2023 | |||||
Age range
Maximum range based only on fossils: base of the Brigantian to the top of the Wuchiapingian or 335.90000 to 254.14000 Ma
Minimum age of oldest fossil (stem group age): 330.3 Ma
Minimum age of oldest fossil (stem group age): 330.3 Ma
Collections (49 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Mississippian | United Kingdom | Chomatodus clavatus (132781 132782) Climaxodus imbricatus (132729) Pristicladodus goughi (132788) Stichacanthus coemansi, Stichacanthus tortworthensis (137332) | |
| Visean | USA (Kentucky) | Janassa sp., Strigilodus tollesonae (238496) | |
| Brigantian | United Kingdom (England) | Cypripediodens cristatus (238497) | |
| Arnsbergian | USA (Montana) | Janassa clarki (116654) | |
| Pennsylvanian | United Kingdom | Janassa bituminosa (137307) Janassa imbricata (137321) | |
| Moscovian | USA (South Dakota) | Janassa sp. (132341) | |
| Moscovian | Japan | Janassa sp. 1, Janassa sp. 2 (90282) | |
| Moscovian | United Kingdom | Janassa bituminosa (137311 137320) Janassa linguaeformis (137319) | |
| Kasimovian - Moscovian | United Kingdom | Climaxodus linguaeformis (137315) | |
| Kasimovian | USA (Nebraska) | Fissodus inaequalis (132974) Janassa maxima (132970) Janassa unguicula (132971) | |
| Kasimovian | USA (Kansas) | Fissodus dentatus (132973) | |
| Missourian | USA (Kansas) | Fissodus dentatus (133264) | |
| Gzhelian - Asselian | Russian Federation | Janassidae indet. (133282) | |
| Sakmarian | USA (Kansas) | Janassa sp. (130786 130787) | |
| Artinskian - Kungurian | USA (Texas) | Janassa sp. (85299 85300) | |
| Early/Lower Kazanian | Russian Federation (Orenburg) | Janassa sp. (189584) | |
| Roadian | USA (Wyoming) | Janassa unguicula (128880) Janassa unguicula, Janassa angularis (149345) | |
| Guadalupian | USA (Wyoming) | Janassa unguicula (236340) | |
| Wuchiapingian | United Kingdom (Durham) | Janassa bituminosa (131709) | |
| Wuchiapingian | USA (Wyoming) | Janassa unguicula (90239 236341) | |
| Wuchiapingian | Germany | Janassa angulata (149462 149463) Janassa angulata, Dictea striata, Janassa dictea, Byzenos latipinnatus (149471) Janassa bituminosa (96856 130037 130038 130039 137316 137317) Janassa humboldii (149464) Janassa korni (130272 130273 130274) | |
| Wuchiapingian | Greenland | Janassa kochi (122142) | |
| Wuchiapingian | United Kingdom | Janassa bituminosa (131704 149365) |