The Cambridge natural history, Vol. 04 (of 10)

by Geoffrey Smith; D'Arcy Wentworth Thompson; Cecil Warburton; Walter Frank Raphael Weldon; Henry Woods

TRILOBITA (p. [221]).

Families

Agnostidae (p. [244]).

Shumardiidae (p. [245]).

Trinucleidae (p. [245]).

Harpedidae (p. [245]).

Paradoxidae (p. [246]).

Conocephalidae = Conocoryphidae (p. [247]).

Olenidae (p. [247]).

Calymenidae (p. [247]).