is a derivative work of the following images: File:Trilobite_hypostome_types_based_on_attachment.png licensed with Cc-by-sa-3.0 2011-04-14T10:47:03Z Obsidian...
Sam Gon III @ trilobites.info], [[:Image:SamGonIII_cepth File:Trilobites_Hypostome_types.PNG licensed with Cc-by-sa-3.0, GFDL 2010-04-11T16:18:28Z Antonov...
Trilobite cephalon ventral anatomy.png Trilobite facial suture types.png Trilobite hypostome types based on attachment.png Image:Trilobite sections-en.svg...