ammonites
Gibbula (Gibbula) engebiensis Ladd 1966 (top snail)

Gastropoda - Trochoidea - Trochidae

Full reference: H. S. Ladd. 1966. Chitons and Gastropods (Haliotidae through Adeorbidae) from Western Pacific Islands. United States Geological Survey Professional Paper 531:1-98

Belongs to Gibbula (Gibbula) according to H. S. Ladd 1966

Sister taxon: Gibbula (Gibbula) kahtanenesis

Type specimen: USNM 648264, a shell

Ecology: epifaunal grazer

Average measurements (in mm): shell 2.90 x 2.90