lamp shell

Marine worms called lamp shells have violet to pink blood, according to the American Chemical Society.

Switching to ecology, Paine studied a living fossil: a species of lamp shell, or brachiopod, for his 1961 PhD.

The experts studied four types of creatures - clams, sea snails, lamp shells and sea urchins - at 12 sites, stretching across the globe from the Arctic to the Antarctic.

Four-day-old lamp shell larvae, for example, have puzzling dark spots on either side of the front end of their bodies.

The old limestones contain great quantities of "lamp shells," which are old-fashioned bivalves.