Kentucky Fossil Shells a Monograph of the Fossil Shells of the Silurian And Dev
Kentucky Fossil Shells a Monograph of the Fossil Shells of the Silurian And Dev
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In our eReader you can find the full English version of the book. Read Kentucky Fossil Shells a Monograph of the Fossil Shells of the Silurian And Dev 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 Kentucky Fossil Shells a Monograph of the Fossil Shells of the Silurian And Dev
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Found in the upper strata of the Devonian formation, around the falls, in Kentucky and Indiana, where it is of very rare occurrence. My figure is taken from a very fine and well preserved ventral valve, showing the inside and the hinge in perfect order. This specimen I found at the Falls of the Ohio, in the so-called rotten hornstone, which furnishes the best preserved fossils.
Spirifera segmenta. HALL.
Plate XIII. , figures 36, 37 and 38.
Spirifer segrHentus, Hall. Tenth Kep. On the State Cab.... 1857. Spirifer segmentus, Hall. Descript. Of New Pal. Fossils, p. 91 1857. Spirifera segmenta, Hall. Pal. N. Y. , Vol. 4, p. 207, plate 31.
Shell transverse, semi-oval; length less than half the width; hinge-line equalling the greatest width of shell, and terminating in salient angles. Sur- face plicate.
Ventral valve much elevated, sub-pyramidal, most prominent at the beak, FOSSILS OF THE SILURIAN AND DEVONIAN ROCKS. 133 which is not, or at least very seldom, incurved ; mesial sinus strongly defined, shallow and nearly flat in the bottom ; its sides are straight, which give it a triangular form, in which the sides are about once and one-half as long as the base.
What to read after Kentucky Fossil Shells a Monograph of the Fossil Shells of the Silurian And Dev?
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To quickly assess the difficulty of the text, read a short excerpt:
Found in the upper strata of the Devonian formation, around the falls, in Kentucky and Indiana, where it is of very rare occurrence. My figure is taken from a very fine and well preserved ventral valve, showing the inside and the hinge in perfect order. This specimen I found at the Falls of the Ohio, in the so-called rotten hornstone, which furnishes the best preserved fossils.
Spirifera segmenta. HALL.
Plate XIII. , figures 36, 37 and 38.
Spirifer segrHentus, Hall. Tenth Kep. On the State Cab.... 1857. Spirifer segmentus, Hall. Descript. Of New Pal. Fossils, p. 91 1857. Spirifera segmenta, Hall. Pal. N. Y. , Vol. 4, p. 207, plate 31.
Shell transverse, semi-oval; length less than half the width; hinge-line equalling the greatest width of shell, and terminating in salient angles. Sur- face plicate.
Ventral valve much elevated, sub-pyramidal, most prominent at the beak, FOSSILS OF THE SILURIAN AND DEVONIAN ROCKS. 133 which is not, or at least very seldom, incurved ; mesial sinus strongly defined, shallow and nearly flat in the bottom ; its sides are straight, which give it a triangular form, in which the sides are about once and one-half as long as the base.
What to read after Kentucky Fossil Shells a Monograph of the Fossil Shells of the Silurian And Dev?
You can find similar books in the "Read Also" column, or choose other free books by Kentucky State Geologist to read onlineMoreLess
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