Fossil Sponge Spicules From the Upper Chalk Found in the Interior of a Single Fl
Fossil Sponge Spicules From the Upper Chalk Found in the Interior of a Single Fl
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In our eReader you can find the full English version of the book. Read Fossil Sponge Spicules From the Upper Chalk Found in the Interior of a Single Fl 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 Sponge Spicules From the Upper Chalk Found in the Interior of a Single Fl
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27) the spi- cule is larger and the rays are proportionately longer and not so thickly set on the surface as in the form just described. In an average specimen, the diameter, including the rays, is 0, 29 mm. And the rays have a length of 0, 0675 mm. Varied forms of these globo-stellates appear to be present in the same specimen of sponge and these spicules probably belong to the same species as the preceding. A similar body is figured by Rutot from the Eocene of Brussels, (op. Cit. PL III, fig.... 35).
Free Siliceous Discs of Stelletta?
(Plate I, figs. 23, 24, 28).
Besides the minute globates and globo-stellates, there are present in the Horstead flint, two forms of small, flattened disc like spicules. One of these (fig. 23) is an extremely delicate, thin disc, circular in outline, with a well defined smooth border and an apparently smooth outer surface. Arranged at regular distances round the border of the disc is a series of about 18 extremely delicate flask-shaped canals, having their narrow end directed to the edge of the disc, which, however, they do not reach, and extending somewhat more than one third of the distance to the centre.
What to read after Fossil Sponge Spicules From the Upper Chalk Found in the Interior of a Single Fl?
You can find similar books in the "Read Also" column, or choose other free books by George Jennings Hinde to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
27) the spi- cule is larger and the rays are proportionately longer and not so thickly set on the surface as in the form just described. In an average specimen, the diameter, including the rays, is 0, 29 mm. And the rays have a length of 0, 0675 mm. Varied forms of these globo-stellates appear to be present in the same specimen of sponge and these spicules probably belong to the same species as the preceding. A similar body is figured by Rutot from the Eocene of Brussels, (op. Cit. PL III, fig.... 35).
Free Siliceous Discs of Stelletta?
(Plate I, figs. 23, 24, 28).
Besides the minute globates and globo-stellates, there are present in the Horstead flint, two forms of small, flattened disc like spicules. One of these (fig. 23) is an extremely delicate, thin disc, circular in outline, with a well defined smooth border and an apparently smooth outer surface. Arranged at regular distances round the border of the disc is a series of about 18 extremely delicate flask-shaped canals, having their narrow end directed to the edge of the disc, which, however, they do not reach, and extending somewhat more than one third of the distance to the centre.
What to read after Fossil Sponge Spicules From the Upper Chalk Found in the Interior of a Single Fl?
You can find similar books in the "Read Also" column, or choose other free books by George Jennings Hinde to read onlineMoreLess
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