American Permian Vertebrates
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In our eReader you can find the full English version of the book. Read American Permian Vertebrates 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 American Permian Vertebrates
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The basisphenoid has its lateral processes considerably developed as keel-like elevations; anteriorly it is drawn out into a pointed, dagger-like parasphenoid, projecting into the space between the pterygoids. The anterior wing of the pterygoid is, at the beginning, gently emarginate, forming the interval for the parasphenoid, but it soon unites with the corresponding wing of the opposite side. The extent of the united ptery- goids in front is considerable, though how great cannot be said becau...se of the imperfect preservation of the specimen. The posterior process of the ptery- goids extends dorsalward in the region of the quadrate, forming on one side the border of the inferior temporal vacuity, on the other taking part in the formation of the otic notch. On the margins of the anterior processes of the pterygoid which form the interpterygoid vacuity, as also on the elevation, there are traces of small teeth; but the preservation of the specimen does not permit the determination of the number.
What to read after American Permian Vertebrates?
You can find similar books in the "Read Also" column, or choose other free books by Samuel Wendell Williston to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The basisphenoid has its lateral processes considerably developed as keel-like elevations; anteriorly it is drawn out into a pointed, dagger-like parasphenoid, projecting into the space between the pterygoids. The anterior wing of the pterygoid is, at the beginning, gently emarginate, forming the interval for the parasphenoid, but it soon unites with the corresponding wing of the opposite side. The extent of the united ptery- goids in front is considerable, though how great cannot be said becau...se of the imperfect preservation of the specimen. The posterior process of the ptery- goids extends dorsalward in the region of the quadrate, forming on one side the border of the inferior temporal vacuity, on the other taking part in the formation of the otic notch. On the margins of the anterior processes of the pterygoid which form the interpterygoid vacuity, as also on the elevation, there are traces of small teeth; but the preservation of the specimen does not permit the determination of the number.
What to read after American Permian Vertebrates?
You can find similar books in the "Read Also" column, or choose other free books by Samuel Wendell Williston to read onlineMoreLess
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