Abies, [177].

Abietites Dunkeri, [179].

Acalephæ, [280], [772].

Acanthoteuthis furiosa, [447], [462].

Acephala, [375].

Acetabulifera, [449].

Achilleum, [223].

Acorn-shell, [506].

Acrocidaris nobilis, [319].

Acrodont reptiles, [648].