Crotalocephalina

Crotalocephalina gibba, from here.

Belongs within: Cheirurinae.

Crotalocephalina is a cosmopolitan genus of trilobites known from the Wenlock (Middle Silurian) to the Eifelian (Middle Devonian). Members of this genus possess lateral glabellar furrows 2S and 3S running across the sagittal line of the whole glabella (Přibyl et al. 1985).

<==Crotalocephalina Přibyl & Vaněk 1964 PVP85
    |--C. (Crotalocephalina) PVP85
    |    |--*C. (C.) gibba (Beyrich 1845) PVP85
    |    |    |--C. g. gibba PVP85
    |    |    |--C. g. auster Alberti 1970 PVP85
    |    |    |--C. g. benziregensis (Alberti 1983) PVP85
    |    |    `--C. g. tifletensis Alberti 1981 PVP85
    |    |--C. (C.) boreas (Maksimova 1977) PVP85
    |    |--C. (C.) brevispinosa (Erben 1952) PVP85
    |    |--C. (C.) cruciata (Hawle & Corda 1847) PVP85
    |    |--C. (C.) gerassimovi (Janischevskij 1918) PVP85
    |    |--C. (C.) globifrons (Hawle & Corda 1847) PVP85
    |    |--C. (C.) intermedia (Pillet 1965) PVP85
    |    |--C. (C.) lenoiri (Bergeron 1887) PVP85
    |    |--C. (C.) packhami (Strusz 1964) PVP85
    |    |--C. (C.) pauper (Barrande 1852) PVP85
    |    |--C. (C.) pengellyi (Salter 1864) PVP85
    |    |--C. (C.) yavorskyi (Tschernyscheva 1951) PVP85
    |    `--C. (C.) zagorai (Alberti 1967) PVP85
    `--C. (Barrandeopeltis Přibyl & Vaněk 1984) PVP85
         |--C. (*B.) interrupta (Barrande 1852) PVP85
         |--C. (B.) expansa (Balashova 1968) PVP85
         |--C. (B.) hexaspina (Maksimova 1960) PVP85
         |--C. (B.) maura (Alberti 1966) PVP85
         |--C. (B.) pseudoexpansa (Maksimova 1978) PVP85
         `--C. (B.) uratubensis (Weber 1932) 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.