. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. Ch. XXIV.] BRACKISH-WATER AND MARINE STRATA. 493 of France and Germany.' It has been traced for thirty miles in a straight line, and can be recognized at still more distant points. The characteristic fossils are a small bivalve, having the form of a Cyclas or Cymia, also a small entomostracan which may be a Oypris, or, if marine, a Cythere (fig. 546), and the microscopic shell of an annelid of an extinct genus called Microconchus (fig. 545) allied to Serpula or Spiro
. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. Ch. XXIV.] BRACKISH-WATER AND MARINE STRATA. 493 of France and Germany.' It has been traced for thirty miles in a straight line, and can be recognized at still more distant points. The characteristic fossils are a small bivalve, having the form of a Cyclas or Cymia, also a small entomostracan which may be a Oypris, or, if marine, a Cythere (fig. 546), and the microscopic shell of an annelid of an extinct genus called Microconchus (fig. 545) allied to Serpula or Spirorbis. Fig. 545. Fig. (^ a. Microconchus (Spiror- bis) carbonarius. Nat. size, and magnified. b. Var. of 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 Lyell, Charles, Sir, 1797-1875. New York, D. Appleton and co.
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectgeology, bookyear1868
