Belemnite. A dart-shaped shell, probably the ancient representative of some of our cuttle-fish. The shell is conical and chambered.
Bellerophon. A small chambered-shell like the Nautilus.
Botryoidal (in Mineralogy). Clustered like a bunch of grapes.
Brachiopoda. A group of shell-bearing animals having two long spiral arms serving to assist in locomotion and for other purposes.
Brevipennate. Short-winged.
Cælacanthus. A fish of the Devonian formation.
Calamite. A fossil from the coal-measures resembling a gigantic reed.
Calamus. A fossil reed-like plant.
Calcaire grossier. A coarse limestone of the Older Tertiary period, found in the Paris basin.
Calcaire siliceux. A compact silicious limestone sometimes replacing the calcaire grossier.