Note 20 — Chapter III · SKELETON OF HEMICHORDATA, UROCHORDATA, AND CEPHALOCHORDATA.
Reading edition
See W. Bateson, Quart. J. Micr. Sci. n. s. vol. XXIV. 1884, p. 208 and later; also E.W. Macbride, Ibid. vol. XXXVI. 1894, p. 385.
Reading edition
See W. Bateson, Quart. J. Micr. Sci. n. s. vol. XXIV. 1884, p. 208 and later; also E.W. Macbride, Ibid. vol. XXXVI. 1894, p. 385.