Genus Fibularia Lamarck, 1816

Type species. Fibularia ovulum Lamarck, 1816 by ICZN Opinion 207 (1954: 350) .

Emended diagnosis. Small, occasionally almost spherical fibulariids entirely lacking internal buttresses; interambulacra very wide at ambitus, over 70% width of ambulacra; ambulacral plates very high at ambitus, each plate almost as high as wide.