A fossil bivalve mollusk associated with genus Hippurites, of several species, having a conical, cup-shaped undervalve, with a flattish upper device or top.
A fossil bivalve mollusk associated with the genus Hippurites, of several species, having a conical, cup-shaped under valve, with a flattish top valve or top. Hippurites are located just within the Cretaceous rocks.
A specimen or types of your family Hippuritidæ the Rudistes; a horsetail. Hippurites had been formerly classed by Lamarck and Latreille with belemnites, etc., to be cephalopods.
A kind of fossil cupcoral, Cyathophyllum ceratites of Goldfuss.
A theory or system of social reform which contemplates a complete reconstruction of society with a more just and equitable distribution of property and labor In popular usage the term is often employed to indicate any lawless revolutionary social scheme See Communism Fourierism Saint Simonianism forms of socialism...