radialia

He includes as part of the vertebra not only the neural (e ', e' ') and hæmal (o', o '') arches, but also, above and below these, the radialia

Form and Function A Contribution to the History of Animal Morphology

(Neither the radialia nor the fin-rays are, by the way, in the same transverse plane as the body of the vertebra).

Form and Function A Contribution to the History of Animal Morphology