1) Cretaceous ammonite 
Hamulina is an extinct ammonoid cephalopod genus belonging to the family Hamulinidae. These cephalopod were fast-moving nektonic carnivores. They lived during the Cretaceous period, Barremiarrean age. Type species is Hamulina astieriana. Fossils of these cephalopods have been found in rocks of Cretaceous of Colombia, Hungary, Italy, Mexico, Spain,...