In geology, point counting is a method to determine the proportion of an area that is covered by some objects of interest. In most cases the area is a thin section or a polished slab. The objects of interest vary between subdisciplines and can for example be quartz or feldspar grains in sedimentology, any type of mineral in petrology or different taxonomic groups in paleontology.
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HINT:
In this Dossier
Taxonomic group in the context of Psocodea
Psocodea is a taxonomic group of insects comprising the bark lice, book lice and parasitic lice. It was formerly considered a superorder, but is now generally considered by entomologists as an order. Despite the greatly differing appearance of parasitic lice (Phthiraptera), they are believed to have evolved from within the former order Psocoptera, which contained the bark lice and book lice, now found to be paraphyletic.
Psocodea contains around 11,000 species, divided among three suborders and more than 70 families. They range in size from 1–10 millimetres (0.04–0.4 in) in length.
View the full Wikipedia page for Psocodea