Cladoselache is a notable genus of shark from this period. Ammonites, a now-extinct group of cephalopods that superficially resemble nautiluses, first evolved during this period. The dominant predator of this period was Dunkleosteus, a giant armored (*) fish. Acanthostega, Ichtyostega, and the recently discovered Tiktaalik all evolved from lobe-finned fishes during this period; those creatures were early tetrapods. This period saw the evolution of the first amphibians and land vertebrates, though these did not flourish until the subsequent Carboniferous. For ten points
Cladoselache is a notable genus of shark from this period. Ammonites, a now-extinct group of cephalopods that superficially resemble nautiluses, first evolved during this period. The dominant predator of this period was Dunkleosteus, a giant armored (*) fish. Acanthostega, Ichtyostega, and the recently discovered Tiktaalik all evolved from lobe-finned fishes during this period; those creatures were early tetrapods. This period saw the evolution of the first amphibians and land vertebrates, though these did not flourish until the subsequent Carboniferous. For ten points, name this "Age of Fishes", a geologic period that came after the Silurian.
Cladoselache is a notable genus of shark from this period. Ammonites, a now-extinct group of cephalopods that superficially resemble nautiluses, first evolved during this period.
{Devonian }