Outcrop of the Annulatus limestone, from the type location
at 107.390920° E, 6.515620° S
South East Asia Indonesia
Geological Time: Neogene Miocene
Tf
the image is provided and the identification is done by Dr.
a relatively small example, but the axial section intersects the annular thickenings that gives this species its name
The identification is based upon:
personal notice of the providing scientist, : Plate n.a., Fig. n.a.