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

*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.

Leave a comment

Your email address will not be published. Required fields are marked *