Report On the Cambrian Rocks of Cape Breton
Report On the Cambrian Rocks of Cape Breton
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In our eReader you can find the full English version of the book. Read Report On the Cambrian Rocks of Cape Breton Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Report On the Cambrian Rocks of Cape Breton
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5) both cardinal curves, and especially the posterior, are well shown. In Hipponicharion on the contrary these curves are almost obsolete.
165 The relation of the muscle scar to the ocular tubercle is also a means of discriminating the genera in these early forms of Ostracoda : thus in Bradorona (Fig. 2) and Bradoria (Fig. 5) it is diagonally behind and below the tubercle, but in Beyrichona it is below and somewhat in front of the tubercle. In Hipponicharion (Fig. 4) the muscle print presses in... behind and below the tubercle. In Indiana (Fig. 1) the scar though not well recognized appears to be as in Bradorona (Fig. 2). In Escasona neither muscle scar nor tubercle have been certainly identified.
Comparing this group of genera with those of the Ordovician and Radically Silurian, we note some obvious differences from them. Perhaps the most notable is the way in which the visual and muscular organs are crowded at ti the front end of the hinge. This would exclude them from the great family of the Leperditidse, Jones, in which the muscle scar is near the middle of the valve.
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To quickly assess the difficulty of the text, read a short excerpt:
5) both cardinal curves, and especially the posterior, are well shown. In Hipponicharion on the contrary these curves are almost obsolete.
165 The relation of the muscle scar to the ocular tubercle is also a means of discriminating the genera in these early forms of Ostracoda : thus in Bradorona (Fig. 2) and Bradoria (Fig. 5) it is diagonally behind and below the tubercle, but in Beyrichona it is below and somewhat in front of the tubercle. In Hipponicharion (Fig. 4) the muscle print presses in... behind and below the tubercle. In Indiana (Fig. 1) the scar though not well recognized appears to be as in Bradorona (Fig. 2). In Escasona neither muscle scar nor tubercle have been certainly identified.
Comparing this group of genera with those of the Ordovician and Radically Silurian, we note some obvious differences from them. Perhaps the most notable is the way in which the visual and muscular organs are crowded at ti the front end of the hinge. This would exclude them from the great family of the Leperditidse, Jones, in which the muscle scar is near the middle of the valve.
What to read after Report On the Cambrian Rocks of Cape Breton?
You can find similar books in the "Read Also" column, or choose other free books by Geological Survey of Canada to read onlineMoreLess
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