Poseidonamicus is one of the most intensively studied genera among marine fossil
ostracods due to its common occurrence in the world deep oceans and its distinctive
morphological features. Many studies using Poseidonamicus have contributed to our
understanding in a wide range of research topics, from evolutionary developmental biology
to paleoenvironmental reconstruction. However, taxonomic confusion with Poseidonamicus
species remains widespread because of subtle interspecific differences within this genus …