Cheirurus

Cheirurus insignis, copyright Trilospain.

Belongs within: Cheirurinae.

Cheirurus is a cosmopolitan genus of trilobites known from the upper Llandovery to Ludlow epochs of the Silurian. Members of this genus have three pairs of pygidial spines and an unpaired medial spine, with the outer pair of spines long and the two inner pairs reduced (Přibyl et al. 1985).

<==Cheirurus Beyrich 1845 PVP85
    |--*C. insignis Beyrich 1845 PVP85
    |--C. centralis Salter 1853 PVP85
    |--C. dilatatus Raymond 1916 PVP85
    |--C. gotlandicus Lindström 1885 PVP85
    |--C. infensus Campbell 1967 PVP85
    |--C. niagarensis (Hall 1868) PVP85
    |--C. obtusatus Hawle & Corda 1847 PVP85
    |--C. patens Raymond 1916 PVP85
    |--C. pauper Barrande 1852 [=Crotalocephalus pauper] PVP85
    |--C. phollikodes Holloway 1980 PVP85
    |--C. prolixus Holloway 1980 PVP85
    |--C. strabo Weber 1932 PVP85
    `--C. tarquinius Billings 1863 PVP85

*Type species of generic name indicated

REFERENCES

[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.