in Asterias rubens, [437];

in Astropecten, [469];

in Luidia, [469], [470];

in Porcellanasteridae, [470];

in Ophiothrix fragilis, [485];

in Echinus esculentus, [517], [527];

in Echinarachnius parma, [544], [547];

in Echinocardium cordatum, [551];

in Holothuria nigra, [563], [564], [566];

in Molpadiida, [575];