|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Decapoda - Retroplumidae
M. J. Rathbun created this new genus (Archaeopus) under the family Ocypodidae in her 1908 paper, Fossil Crabs from California.
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.