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Onchus
Taxonomy
Onchus was named by Agassiz (1837) [Sepkoski's age data: S Ldov-u D Fame Sepkoski's reference number: 455].
It was assigned to Placoides by Agassiz (1837); to Squalidae by M'Coy (1855); to Ichthyodorulites by Hay (1902); to Ptyctodontidae by Bryant (1932); to Onchidae by Jordan (1963); to Acanthodii by Denison (1979); and to Ischnacanthida by Sepkoski (2002).
It was assigned to Placoides by Agassiz (1837); to Squalidae by M'Coy (1855); to Ichthyodorulites by Hay (1902); to Ptyctodontidae by Bryant (1932); to Onchidae by Jordan (1963); to Acanthodii by Denison (1979); and to Ischnacanthida by Sepkoski (2002).
Species
Species lacking formal opinion data
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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. †Onchus Agassiz 1837
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†Onchus arcuatus Agassiz 1837
†Onchus besomensis White 1961
†Onchus clintoni Claypole 1885
†Onchus granulatus Roemer 1885
†Onchus graptolitarum Fritsch 1907
†Onchus hamatus Agassiz 1837
†Onchus latus Leriche 1931
†Onchus major Etheridge 1872
†Onchus murchisoni Agassiz 1837
†Onchus overathensis Gross 1937
†Onchus penetrans Bryant 1932
†Onchus pennsylvanicus Claypole 1885
†Onchus rarus Liepin'sh 1959
†Onchus rectus Eastman 1899
†Onchus semistriatus Agassiz 1837
†Onchus siluricus Fritsch 1907
†Onchus sublaevis Agassiz 1845
†Onchus tenuistriatus Agassiz 1837
†Onchus verus Schmidt 1954
†Onchus wheathillensis White 1961
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: c = class, subp = subphylum | |||||
References: Carroll 1988, Aberhan et al. 2004 |
Age range: base of the Ludfordian to the top of the Early/Lower Severodvinian or 425.60000 to 252.30000 Ma
Collections (12 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Ludfordian | United Kingdom (England) | O. sp. (8325) | |
Ohesaare | Estonia | O. murchisoni, O. tenuistriatus (13831) | |
Pridoli | United Kingdom (Shropshire) | O. tenuistriatus (132714) | |
Pridoli | Czech Republic | O. sp. (13894) | |
Pridoli | Estonia | O. roemeri, O. tenuistriatus (13829) O. tenuistriatus (13830) | |
Lochkovian | Canada (Nova Scotia) | O. sp. (14201) | |
Lochkovian | United Kingdom (England) | O. besomensis, O. wheathillensis (90352) | |
Lochkovian - Pragian | USA (Ohio) | O. sp. (26874) | |
Early/Lower Devonian | Bolivia | O. punctuatus, O. sicaeformis, O. sp. (25592) | |
Emsian | USA (Wyoming) | O. penetrans (26176) | |
Urzhumian - Early/Lower Severodvinian | Russian Federation (Tatarstan) | O. sp. (27931) |