I encountered this gastropod in sediment taken by a bottom grab on the summit of the Great Meteor Seamount (NE Atlantic) in about 300 m depth. The figure is from a sub-adult, adult specimens have one more whorl and reach a height of about 2.5 mm.
Please note the unusual protoconch with reticulated sculpture and the concavely curved lip.
I would be happy with a family that would fit.
Answer: Luigi Romani provided the correct name Haloceras meteoricum Gofas 2018
Leon Hoffman