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Taxonomy
Dikelocephalacea was named by Miller (1889).
It was corrected as Dikelocephaloidea by Bell (2012).
It was assigned to Asaphida by Hughes (1994) and Bell (2012).
It was corrected as Dikelocephaloidea by Bell (2012).
It was assigned to Asaphida by Hughes (1994) and Bell (2012).
Synonymy list
| Year | Name and author |
|---|---|
| 1889 | Dikelocephalacea Miller p. 718 |
| 1994 | Dikelocephalacea Hughes |
| 2012 | Dikelocephaloidea Bell |
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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.
Superfm. †Dikelocephaloidea Miller 1889
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Fm. †Dikelocephalidae Miller 1889
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G. †Briscoia Walcott 1924
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†Briscoia angustilimba Westrop 1986
†Briscoia coloradoensis Walcott 1914
†Briscoia dalyi Walcott 1914
†Briscoia devinei Billings 1865
†Briscoia llanoensis Winston and Nicholls 1967
†Briscoia nevadensis Resser 1937
†Briscoia pertransversa Lochman 1956
†Briscoia schucherti Ulrich and Resser 1930
†Briscoia septentrionalis Kobayashi 1935
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Invalid names: Briscoia mertiei Kobayashi 1935 [synonym], Briscoia robusta Kobayashi 1935 [synonym]
†Briscoia sinclairensis Walcott 1924
Invalid names: Parabriscoia Kobayashi 1935 [synonym]
G. †Dikelocephalus Owen 1852
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†Dicellocephalus angustifrons Walcott 1884
†Dicellocephalus bilobatus Hall and Whitfield 1877
†Dicellocephalus iole Walcott 1884
†Dicellocephalus marica Walcott 1884
†Dicellocephalus nasutus Walcott 1884
†Dicellocephalus osceola Hall 1863
†Dicellocephalus richmondensis Walcott 1884
†Dicellocephalus tribulus Walcott 1912
†Dikelocephalus halli Ulrich and Resser 1930
†Dikelocephalus minnesotensis Owen 1852
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Invalid names: Dikelocephalus barretti Ulrich and Resser 1930 [synonym], Dikelocephalus beani Ulrich and Resser 1930 [synonym], Dikelocephalus brevis Ulrich and Resser 1930 [synonym], Dikelocephalus declivis Ulrich and Resser 1930 [synonym], Dikelocephalus edwardsi Ulrich and Resser 1930 [synonym], Dikelocephalus gracilis Ulrich and Resser 1930 [synonym], Dikelocephalus granosus Ulrich and Resser 1930 [synonym], Dikelocephalus hotchkissi Ulrich and Resser 1930 [synonym], Dikelocephalus inaequalis Ulrich and Resser 1930 [synonym], Dikelocephalus intermidius Ulrich and Resser 1930 [synonym], Dikelocephalus juvinalis Ulrich and Resser 1930 [synonym], Dikelocephalus marginatus Ulrich and Resser 1930 [synonym], Dikelocephalus norwalkensis Ulrich and Resser 1930 [synonym], Dikelocephalus orbiculatus Ulrich and Resser 1930 [synonym], Dikelocephalus ovatus Ulrich and Resser 1930 [synonym], Dikelocephalus oweni Ulrich and Resser 1930 [synonym], Dikelocephalus postrectus Ulrich and Resser 1930 [synonym], Dikelocephalus raaschi Ulrich and Resser 1930 [synonym], Dikelocephalus regalis Ulrich and Resser 1940 [synonym], Dikelocephalus retrorsus Ulrich and Resser 1930 [synonym], Dikelocephalus subplanus Ulrich and Resser 1930 [synonym], Dikelocephalus thwaitesi Ulrich and Resser 1930 [synonym], Dikelocephalus weidmani Ulrich and Resser 1930 [synonym], Dikelocephalus wiltonensis Ulrich and Resser 1930 [synonym], Dikelocephalus wisconsinensis Ulrich and Resser 1930 [synonym], Ogygia minnesotensis Chapman 1856 [synonym]
†Dikelocephalus wisconensis Ulrich and Resser 1930
G. †Elkia Walcott 1924
G. †Neoiranella Özdikmen 2006
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†Neoiranella latefrons King 1937
Invalid names: Iranella Hupe 1953 [replaced]
G. †Osceolia Walcott 1914
G. †Princetonella Lochman 1953
G. †Randicephalus Ivshin 1962
G. †Stigmacephalus Resser 1937
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†Stigmacephalus flexifrons Feniak 1952
†Stigmacephalus hudsonensis Nelson 1951
†Stigmacephalus oweni Hall 1863
Invalid names: Saukiidae Ulrich and Resser 1930 [synonym]
Fm. †Ptychaspididae Raymond 1924
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G. †Alborsella Kushan 1973
G. †Changia Sun 1924
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†Changia chinensis Sun 1924
Invalid names: Coreanocephalus Kobayashi 1935 [synonym], Quadraticephalus Sun 1925 [synonym]
G. †Eoptychaspis Nelson 1951
G. †Eowuhuia Zhang and Wang 1984
G. †Euptychaspis Ulrich 1931
G. †Idiomesus Raymond 1924
G. †Imlerella Loch and Taylor 2004
G. †Kathleenella Ludvigsen 1982
G. †Keithiella Rasetti 1944
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†Keithiella brevis Rasetti 1944
†Keithiella cylindrica Billings 1860
†Keithiella depressa Rasetti 1944
G. †Macronoda Lochmann 1964
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†Macronoda punctata Loch et al. 1993
Invalid names: Promesus Lochman 1964 [synonym]
G. †Plectrella Ludvigsen and Westrop 1989
G. †Proricephalus Westrop 1986
G. †Ptychaspis Hall 1863
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†Ptychaspis granulosa Owen 1852
†Ptychaspis miniscaensis Owen 1852
†Ptychaspis minuta Whitfield 1878
†Ptychaspis pustulosa Hall and Whitfield 1877
†Ptychaspis tuberosa Feniak 1952
Invalid names: Asioptychaspis Kobayashi 1933 [synonym]
G. †Sunwaptia Westrop 1986
G. †Wilcoxaspis Westrop 1986
Invalid names: Dikelocephaliidae Miller 1889 [empty]
Diagnosis
No diagnoses are available