Description
It is known to be one of the largest terrestrial predators ever discovered in the fossil record
and may have had functions of communication
The specific geographic location of Dimetrodon varied depending on the species
The ankylosaur measured about 6
Helicoprion Variante:Imprimado It is known to beHelicoprion (H. ergassaminon, `Sierra en espiral) es un gnero de peces cartilaginosos extintos que se asemejaban a los tiburones en su apariencia y comportamiento. Este gnero emergi por primera vez en los ocanos del Carbonfero Superior, hace aproximadamente 290 millones de aos, y sobrevivi a la extincin masiva del Prmico Trisico, que ocurri hace unos 252 millones de aos. Sin embargo, finalmente se extingui en el Trisico Superior, hace aproximadamente
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