Definitions

1. adjective

relating to or derived from the Caenogastropoda, an order of medium-sized to large sea snails.

“The caenogaean shells found in the museum’s collection date back to the Eocene epoch.”

2. noun

a member of the Caenogastropoda, an order of medium-sized to large sea snails.

“The caenogaean snails were found in the coastal area after the recent tide.”