aspondylous vertebra
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vertebra aspondyla — (plural vertebrae aspondylae)) aspondylous vertebra (a vertebra lacking a centrum although neural and haemal arches are well developed, e.g. in Cyclostomata, Holocephali, Dipnoi, Acipenseridae) … Dictionary of ichthyology
aspondyly — the condition of an aspondylous vertebra … Dictionary of ichthyology
