The figure below shows the distribution of samples containing the trilobite Ceraurus.
Ceraurus is an uncommon trilobite in the MRV strata.
- Ceraurus Green, 1832 [*C. pleurexanthemus]
- Glabella expanding forward, with 3 pairs of short lateral furrows; eyes set well away from glabella, opposite 3p; fixigenae with long genal spines. Thoracic segments generally 11. Pygidium with long pair of axially recurved pleural spines from anterior segment. Surface tuberculation coarse.
M. Ord. - U. Ord., Europe, Greenland, North America, Himalayas
- Family Cheiruridae Salter, 1864
- Pleurae with pointed or bluntly rounded spines, and oblique or transverse pleural furrows, in some genera represented by row of pits, or effaced. Pygidium with 2 to 4 pairs of pleural ribs and spines; axial rings few. Surface commonly tuberculate, pitted, or both. Appendages only of Ceraurus described; antennae uniramous, other appendages biramous, with gill branches bearing filaments only on distal segments.
L. Ord. - M. Dev.
- Order Phacopida Salter, 1864
NOTE: The classification of trilobites has undergone several revisions since the 1959 publication of Volume O of the Treatise. The classification presented here only represents a starting point for the search for further information.
Treatise on Invertebrate Paleontology, O433.