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Janassa
Taxonomy
Janassa is a genus. It is not extant. Its type is Trilobites bituminosus.
It was assigned to Petalodontida by Zangerl (1981) and Sepkoski (2002); to Petalodontidae by Woodward (1889), Hay (1902) and Goto and Okura (2004); and to Janassidae by Jordan (1963), Lund (1989) and Ginter et al. (2010).
It was assigned to Petalodontida by Zangerl (1981) and Sepkoski (2002); to Petalodontidae by Woodward (1889), Hay (1902) and Goto and Okura (2004); and to Janassidae by Jordan (1963), Lund (1989) and Ginter et al. (2010).
Synonyms
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Synonymy list
Year | Name and author |
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1840 | Dictea Münster p. 124 |
1843 | Byzenos Münster p. 50 |
1848 | Climaxodus McCoy |
1889 | Janassa Woodward p. 34 |
1902 | Janassa Hay p. 275 |
1963 | Climaxodus Jordan p. 593 |
1963 | Dictea Jordan p. 593 |
1963 | Janassa Jordan p. 593 |
1981 | Janassa Zangerl p. 98 |
1989 | Janassa Lund p. 359 |
2002 | Janassa Sepkoski |
2004 | Janassa Goto and Okura p. 221 |
2010 | Janassa Ginter et al. p. 134 |
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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. †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]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, subp = subphylum | |||||
References: Hendy et al. 2009, Carroll 1988, Wagner 2023 |
Age range: base of the Arnsbergian to the top of the Wuchiapingian or 326.40000 to 254.17000 Ma
Collections (39 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Mississippian | United Kingdom | Chomatodus clavatus (132781 132782) Climaxodus imbricatus (132729) | |
Arnsbergian | USA (Montana) | J. clarki (116654) | |
Pennsylvanian | United Kingdom | J. bituminosa (137307) J. imbricata (137321) | |
Moscovian | USA (South Dakota) | J. sp. (132341) | |
Moscovian | Japan | J. sp. 1, J. sp. 2 (90282) | |
Moscovian | United Kingdom | J. bituminosa (137311 137320) J. linguaeformis (137319) | |
Kasimovian - Moscovian | United Kingdom | Climaxodus linguaeformis (137315) | |
Kasimovian | USA (Nebraska) | J. maxima (132970) J. unguicula (132971) | |
Sakmarian | USA (Kansas) | J. sp. (130786 130787) | |
Artinskian - Kungurian | USA (Texas) | J. sp. (85299 85300) | |
Early/Lower Kazanian | Russian Federation (Orenburg) | J. sp. (189584) | |
Roadian | USA (Wyoming) | J. unguicula (128880) J. unguicula, J. angularis (149345) | |
Wuchiapingian | United Kingdom (Durham) | J. bituminosa (131709) | |
Wuchiapingian | United Kingdom | J. bituminosa (131704 149365) | |
Wuchiapingian | USA (Wyoming) | J. unguicula (90239) | |
Wuchiapingian | Germany | J. angulata (149462 149463) J. angulata, Dictea striata, J. dictea, Byzenos latipinnatus (149471) J. bituminosa (96856 130037 130038 130039 137316 137317) J. humboldii (149464) J. korni (130272 130273 130274) | |
Wuchiapingian | Greenland | J. kochi (122142) |