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Taxonomy
Cyphoproetus was named by Kegel (1927).
It was assigned to Proetida by Sepkoski (2002); to Proetidae by Begg (1950) and Jell and Adrain (2002); and to Proetinae by Owen (1981) and Hughes (2010).
It was assigned to Proetida by Sepkoski (2002); to Proetidae by Begg (1950) and Jell and Adrain (2002); and to Proetinae by Owen (1981) and Hughes (2010).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1927 | Cyphoproetus Kegel |
| 1950 | Cyphoproetus Begg p. 287 |
| 1981 | Cyphoproetus Owen |
| 2002 | Cyphoproetus Jell and Adrain p. 363 |
| 2002 | Cyphoproetus Sepkoski |
| 2010 | Cyphoproetus Hughes pp. 103 - 104 |
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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. †Cyphoproetus Kegel 1927
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†Cyphoproetus bellus Cooper and Kindle 1936
†Cyphoproetus comitilus Clarkson and Howells 1981
†Cyphoproetus depressa Barrande 1846
†Cyphoproetus facetus Tripp 1954
†Cyphoproetus pugionis Howells 1982
†Cyphoproetus semidepressus Šnajdr 1975
†Cyphoproetus svartoensis Owen 1981
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. E. Hughes 2010 | The following diagnosis is based on that of Thomas (1978, p. 40), emended to allow for the variable position of the occipital node: proetine with glabella with deep S1 defining prominent L1; lateral occipital lobes typically present. Preglabellar field, if present, shorter (sag.) than anterior border; lateral cephalic margin commonly incurved at base of genal spine. Thorax of 9–10 segments. Pygidium without border; axis with 5–8 rings, pleural areas with 3–6 pairs of pleural ribs. |