cephalaspida

• Terme scientifique désignant un groupe éteint de vertébrés aquatiques cuirassés, proches des poissons sans mâchoires, dont la classification taxonomique reste incertaine.

A scientific term referring to an extinct group of armored, fish-like vertebrates, whose taxonomic classification remains uncertain.

indénombrable · nom propre

1. Extinct armored fish-like vertebratesC2formalscientific

   An extinct group of jawless, fish-like vertebrates that lived during the Paleozoic era, characterized by a bony head shield.

   Céphalaspides

   • Cephalaspida are known from fossils found in marine sediments.
   • The head shield of Cephalaspida was often covered with bony plates.
   • Paleontologists study Cephalaspida to understand early vertebrate evolution.