الإنجليزية - الإنجليزية
تعريف placoderm في الإنجليزية الإنجليزية القاموس.
- A member of an extinct group of fish with armored heads; the group lived during the Silurian and Devonian periods
- One of the Placodermi
- fishlike vertebrate with bony plates on head and upper body; dominant in seas and rivers during the Devonian; considered the earliest vertebrate with jaws
placoderm
الواصلة
pla·co·dermالنطق
Resimler
السابق
المفضلات