Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 814
tone from Pyrenees,showing Nummulites laid open by fracture through medianplane; B, Orbitoides. fossil examples of the genus, and which shows no fewer than ten convo-lutions in a fragment that does not nearly extend to the centre of thespire. This section also shows the complete inclosure of the… … Fig. 573.—Vertical section of portion of Nummulites laevigata : a, marginof external whorl ; b, one of the outer row of chambers ; c, c, whorl investedby a; d, one of the chambers of the fourth whorl from the margin ; e, e,marginal portions of the inclosed whorls; /, investing portions of…
Microscopy
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