Astigmata is a suborder of mites. There are 81 species of Astigmata, in 55 genera and 79 families. This suborder has been around since the priabonian age. It includes groups like Chetochelacaridae, Heterocoptidae, and Kytoditidae.
Definition: overall repetitive or reflective pattern in the body of one individual of this taxon. eg: bilateral symmetry, rotational symmetry, radial symmetry
Definition: The number of fossil occurrences in the Paleobiology Database (https://paleobiodb.org) that are identified as belonging to a particular taxon or any of its subtaxa.