Description
Fossil Ammonite – Nice black ammonites similar to picture, measuring 1 to 1-1/2 in with nice ribbing. Asteroceras Obtusi, Early Jurassic, Huancayo, Peru
Asteroceras is an extinct genus of cephalopod belonging to the Ammonite subclass. These fast-moving nektonic carnivores lived during the Triassic and Jurassic periods (from 205.6 to 189.6 Ma).
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