Definition of ceratite in English:



  • An ammonoid fossil of an intermediate type found chiefly in the Permian and Triassic periods, typically with partly frilled and partly lobed suture lines.

    Typified by the genus Ceratites, order Ceratida

    Compare with ammonite and goniatite
    • ‘The suture lines of ceratites are less complex, and those of goniatites even less so than ceratites.’
    • ‘At last tracking structures indicate different viscoelastical properties of the septal mantle in goniatites, ceratites and ammonites.’
    • ‘This ceratite had strong, simple ribs ending in a node on the dorsal side.’
    • ‘Consequently, sutural nomenclature of Permian ceratites and Mesozoic ammonoids has to be modified.’
    • ‘In addition to the ceratites, other forms with more complex suture patterns appear for the first time.’


Mid 19th century: from modern Latin Ceratites (from Greek keras, kerat- ‘horn’) + -ite.