TissotiaTissotia is a genus of ammonites belonging to the family Tissotiidae.These fast-moving nektonic carnivores lived in the Cretaceous period. Shells of Tissotia species can reach a diameter of.SpeciesSpecies within the genus Tissotia include:Tissotia fourneli Bayle, 1849Tissotia halli Knechtel, 1947Tissotia hedbergi Benavides-Caceres, 1956Tissotia steinmanni Lissón, 1908DistributionFossils of the species within this genus have been found in the Cretaceous sediments of Brazil, Cameroon, Egypt, France, Nigeria, Peru and Spain.