anaspida

• Вымерший отряд бесчелюстных позвоночных, известный из силурийского и девонского периодов.

An extinct order of jawless vertebrates, known from the Silurian and Devonian periods.

proper noun

1. Extinct jawless vertebratesC2formalscientific

   An extinct order of jawless vertebrates that lived during the Silurian and Devonian periods, characterized by a scaleless body and a series of gill openings.

   Вымершие бесчелюстные позвоночные

   • Fossils of Anaspida have been found in marine sediments from the Silurian period.
   • The Anaspida are considered an early group of vertebrates that lacked jaws.
   • Paleontologists study Anaspida to understand the evolution of early fish.