Ceraurus pleurexanthemus, from here.

Belongs within: Cheirurinae.

Ceraurus is a genus of trilobites known from warm waters of the Middle Ordovician of North America (Přibyl et al. 1985).

Characters (from Přibyl et al. 1985): Eyes shifted anteriorly; glabella with exsagitally running pair of furrows considerably deepened, so that at axial margins it virtually pinches the lateral glabellar lobes; pygidium with three pairs of pygidial spines and odd medial spine, or with two pairs of pygidial spines and convexly bent posterior margin.

<==Ceraurus Green 1832 PVP85
    |--*C. pleurexanthemus Green 1832 PVP85
    |--C. cetus Dean 1979 PVP85
    |--C. convexus Cooper 1953 PVP85
    |--C. elginensis Slocom 1913 PVP85
    |--C. globulobatus Bradley 1930 PVP85
    |--C. hermanni Walters 1924 PVP85
    |--C. horridus Troedsson 1929 PVP85
    |--C. infrequens Phleger 1933 PVP85
    |--C. insignis Hall 1852 PVP85
    |--C. mackenziensis Ludvigsen 1979 PVP85
    |--C. mantranseris Sinclair 1947 PVP85
    |--C. milleranus Miller & Gurley 1894 PVP85
    |--C. miseneri Foerste 1909 PVP85
    |--C. montyensis Evitt 1953 PVP85
    |--C. parvilobatus Troedsson 1929 PVP85
    |--C. plattinensis Foerste 1921 PVP85
    |--C. pustulosus (Hall 1847) PVP85
    |--C. ruidus Cooper 1953 PVP85
    |--C. savagei Walters 1924 PVP85
    |--C. tenuicornis Raymond 1925 PVP85
    |--C. trapezoidalis Esker 1964 PVP85
    |--C. tuberosus Troedsson 1929 PVP85
    |--C. vigilans Hall 1847 PVP85
    `--C. whittingtoni Evitt 1953 PVP85

*Type species of generic name indicated


[PVP85] Přibyl, A., J. Vaněk & I. Pek. 1985. Phylogeny and taxonomy of family Cheiruridae (Trilobita). Acta Universitatis Palackianae Olomucensis Facultas Rerum Naturalium Geographica-Geologica XXIV 83: 107–193.

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