Fossil Echini of the West Indies
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In our eReader you can find the full English version of the book. Read Fossil Echini of the West Indies 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 Fossil Echini of the West Indies
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Cotteaui II. Petals truncate and poriferous areas more or less so.
L. Petaloid area two-thirds of test length C. Batheri LL. Petaloid area distinctly more than two-thirds of test length C. Parvus SYSTEMATIC DESCRIPTIONS CLYPEASTRINA. 33 Key to West Indian Fossil Species of Clypeaster Continued.
2. Oral surface of test slightly concave or flat, with mouth more or less sunken. M . Test convex, sloping upward more or less uniformly from the thick margin.
N. Height of test equal to or exceeding one...-half its width C. Duchassaingi NN. Height of test not more than one-third its width C. Ambigenus MM. Test flattened; if petaloid area is elevated, it does not slope upward evenly from margin. O. Test with thin, uniformly sloping margin.
P. Test very flat, with flush petaloid area C. Placenloides PP. Test not flat, its petaloid area conspicuously elevated C. Meridanensis GO. Test with very thick, more or less swollen margins.
Q. Oral surface distinctly concave C. Oxybaphon QQ. Oral surface perfectly flat C.
What to read after Fossil Echini of the West Indies?
You can find similar books in the "Read Also" column, or choose other free books by Robert Tracy Jackson to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Cotteaui II. Petals truncate and poriferous areas more or less so.
L. Petaloid area two-thirds of test length C. Batheri LL. Petaloid area distinctly more than two-thirds of test length C. Parvus SYSTEMATIC DESCRIPTIONS CLYPEASTRINA. 33 Key to West Indian Fossil Species of Clypeaster Continued.
2. Oral surface of test slightly concave or flat, with mouth more or less sunken. M . Test convex, sloping upward more or less uniformly from the thick margin.
N. Height of test equal to or exceeding one...-half its width C. Duchassaingi NN. Height of test not more than one-third its width C. Ambigenus MM. Test flattened; if petaloid area is elevated, it does not slope upward evenly from margin. O. Test with thin, uniformly sloping margin.
P. Test very flat, with flush petaloid area C. Placenloides PP. Test not flat, its petaloid area conspicuously elevated C. Meridanensis GO. Test with very thick, more or less swollen margins.
Q. Oral surface distinctly concave C. Oxybaphon QQ. Oral surface perfectly flat C.
What to read after Fossil Echini of the West Indies?
You can find similar books in the "Read Also" column, or choose other free books by Robert Tracy Jackson to read onlineMoreLess
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