Noun: ostracoderm 'ós-tru-kow,durm
- Extinct fish-like jawless vertebrate having a heavily armoured body; of the Paleozoic
"Fossils of ostracoderms provide evidence of early vertebrate evolution"
Derived forms: ostracoderms
Type of: agnathan, jawless fish, jawless vertebrate
Part of: order Ostracodermi, Ostracodermi
Encyclopedia: Ostracoderm