Aspidosiphon (Akrikos) zinni Cutler, 1969  

This species description was based on 246 specimens. It is a small, fragile, deep-sea species, with an ungrooved anal shield and compressed unidentate hooks arranged irregularly. It has a transparent mid trunk, which allows viewing the internal organs through the trunk wall. Very common in the northern Atlantic Ocean in depths up to 4400 m inside foraminiferans tests.