. The ancient life-history of the earth; a comprehensive outline of the principles and leading facts of palæontological science. Paleontology. THE CARBONIFEROUS PERIOD. 183 netted wings attaining an expanse of fully seven inches, and therefore much exceeding any existing Ephemerid in point of size. The lower groups of the MoHusca are abundantly represented in the marine strata of the Carboniferous series by Polyzoans. Fig. 126.—Carboniferous/'(7/j/2£>rt^. a. Fragment oi Polyporadeiuiroides, of the natural size, Ireland ; a' Small portion of the same, enlarged to show the cells ; b, Glmicoii
. The ancient life-history of the earth; a comprehensive outline of the principles and leading facts of palæontological science. Paleontology. THE CARBONIFEROUS PERIOD. 183 netted wings attaining an expanse of fully seven inches, and therefore much exceeding any existing Ephemerid in point of size. The lower groups of the MoHusca are abundantly represented in the marine strata of the Carboniferous series by Polyzoans. Fig. 126.—Carboniferous/'(7/j/2£>rt^. a. Fragment oi Polyporadeiuiroides, of the natural size, Ireland ; a' Small portion of the same, enlarged to show the cells ; b, Glmicoiioinc pulcherrima, a fragment, of the natural size, Ireland ; //, Portion of the same, enlarged ; c. The central screw-like axis oiArc/uviedes IVortheni, of the natural size—Carboniferous, America ; d, Portion of the exterior of the frond of the same, enlarged ; c", Portion of the interior of the frond of the same showing the mouths of the cells, enlarged. (After M'Coy and Hall.) and Brachiopods. Amongst the former, although a variety of other types are known, the majority still belong to the old group of the " Lace-corals " {FenestelUdce), some of the charac- teristic forms of which are. here figured (fig. 126). The graceful. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Nicholson, Henry Alleyne, 1844-1899. Edinburgh, London, Blackwood
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Keywords: ., bookaut, bookcentury1800, bookdecade1870, booksubjectpaleontology
