e/List of prehistoric malacostracans

Information
has gloss	eng: This list of prehistoric malacostracans is an attempt to create a comprehensive listing of all genera from the fossil record that have ever been considered to be malacostracans, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomina dubia), or were not formally published (nomina nuda), as well as junior synonyms of more established names, and genera that are no longer considered malacostracans . The majority of the genera are from the order Decapoda, for which a recent synopsis allows invalid names to be excluded .
lexicalization	eng: List of prehistoric malacostracans
instance of	(noun) any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton crustacean

Media
media:img	Branchioplax washingtoniana 02a SR EC 07-01-12.jpg