silurian

• Período geológico da era Paleozoica que se estendeu de aproximadamente 443 a 419 milhões de anos atrás, conhecido pelo surgimento dos primeiros animais terrestres que respiravam ar e pelo desenvolvimento dos peixes com mandíbula.

A proper noun referring to a geological period from approximately 425 to 405 million years ago, known for the emergence of the first air-breathing animals.

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1. Geological periodC1formalscientific

   The third period of the Paleozoic Era, spanning from about 443.8 to 419.2 million years ago, characterized by the first appearance of land plants and air-breathing animals.

   Período Siluriano

   • The Silurian period saw the emergence of the first vascular plants.
   • Fossils from the Silurian era include early jawless fish.
   • During the Silurian, the first air-breathing arthropods appeared on land.