Paraconularia subtilis is the first ever conulariid specimen ever described. Conulariids are extinct marine organisms their fossils are found in rocks that are between about 500 and 200 million years old.
Paraconularia subtilis shells like all conulariids are
For a long time the place of Paraconularia subtilis and other conulariids in the tree of life was unknown.
It is now believed that Paraconularia subtilis and other conulariids were relatives of
The closest relatives of conulariids are jellyfish. Conulariids representing the fixed, so-called polyp stage of extinct jellyfish.