Palleopa
Palleopa is a genus of extinct trilobites belonging to the family Pterygometopidae. These marine arthropods lived during the Ordovician period. Palleopa are characterized by their distinctive cephalon (head shield), thorax, and pygidium (tail shield), segmented into numerous tergites. Distinguishing features of the genus typically include the shape and ornamentation of the cephalon, particularly the glabella (the central raised area of the cephalon), and the arrangement of the pygidial ribs. Fossil specimens of Palleopa have been found in various locations, contributing to the understanding of Ordovician marine ecosystems and the evolution of trilobites. The study of Palleopa and other trilobites aids in biostratigraphy, helping to date and correlate rock layers across different regions. Detailed morphological analysis is crucial for identifying different species within the genus and understanding their phylogenetic relationships.