Variation studies of some phacopid trilobites of Eruasia and North West Africa /

Eitemau Tebyg

• Stratigraphy, environments and systematics of the homalonotid and phacopid trilobites from the Upper Silurian-Lower Devonian of central Victoria, Australia
  gan: Sandford, Andrew
  Cyhoeddwyd: (2003)
• The ordovician trilobite fauna of the Builth-Llandrindod inlier
  gan: Hughes Christopher Paul
• Terrace ridges in trilobites
  gan: Brown, Abigail Mary
  Cyhoeddwyd: (2005)
• Aspects of the biology and palaeoecology of trilobites
  gan: Miller, J.
  Cyhoeddwyd: (1972)
• Organization, life, and systematics of trilobites
  gan: Bergström, Jan
  Cyhoeddwyd: (1973)