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.

    Compare with ammonite and goniatite
    • ‘The suture lines of ceratites are less complex, and those of goniatites even less so than ceratites.’
    • ‘Consequently, sutural nomenclature of Permian ceratites and Mesozoic ammonoids has to be modified.’
    • ‘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.’
    • ‘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.