"Pachydesmoceras is a genus of ammonites belonging to the family Desmoceratidae.
Species of this genus were fast-moving nektonic carnivorous shelled cephalopods. They lived during the Cretaceous, from the Albian (112.0-99.6 Mya) to the Santonian (85.8-83.5 Mya) stage." - (Wikipedia (en) 18.12.2020)
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