The Appendages Anatomy And Relationships of Trilobites
The Appendages Anatomy And Relationships of Trilobites
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In our eReader you can find the full English version of the book. Read The Appendages Anatomy And Relationships of Trilobites 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 The Appendages Anatomy And Relationships of Trilobites
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To quickly assess the difficulty of the text, read a short excerpt:
Sci. , vol. 13, 1902, pi. 5, figs. 2, 3 (photographs).
This is a small imperfect specimen, developed from the ventral side. It retains the best preserved metastoma in the collection, but was used by Professor Beecher especially to illus- 156 THE APPENDAGES, ANATOMY, AND RELATIONS OF TRILOBITES.
trate the convergent ridges on the inside of the ventral membrane in the axial region of the thorax. These ridges are very low, and on each segment of the thorax there is a central one, outside of which ...is a pair which are convergent forward, making angles of 35 to 45 with the axis.
The metastoma is shaped much like the hypostoma of an Illanus. It is convex, nearly semicircular, with the straight side forward, and there is a continuous raised border around the curved sides and back. This border is separated from the central convex body by a deep linear depression.
The hypostoma is also rather well preserved and has a narrow, slightly elevated border at the sides and back.
Measurements: The incomplete specimen, from which only a very small portion of the length is missing, is 9 mm.
What to read after The Appendages Anatomy And Relationships of Trilobites?
You can find similar books in the "Read Also" column, or choose other free books by Percy Edward Raymond to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Sci. , vol. 13, 1902, pi. 5, figs. 2, 3 (photographs).
This is a small imperfect specimen, developed from the ventral side. It retains the best preserved metastoma in the collection, but was used by Professor Beecher especially to illus- 156 THE APPENDAGES, ANATOMY, AND RELATIONS OF TRILOBITES.
trate the convergent ridges on the inside of the ventral membrane in the axial region of the thorax. These ridges are very low, and on each segment of the thorax there is a central one, outside of which ...is a pair which are convergent forward, making angles of 35 to 45 with the axis.
The metastoma is shaped much like the hypostoma of an Illanus. It is convex, nearly semicircular, with the straight side forward, and there is a continuous raised border around the curved sides and back. This border is separated from the central convex body by a deep linear depression.
The hypostoma is also rather well preserved and has a narrow, slightly elevated border at the sides and back.
Measurements: The incomplete specimen, from which only a very small portion of the length is missing, is 9 mm.
What to read after The Appendages Anatomy And Relationships of Trilobites?
You can find similar books in the "Read Also" column, or choose other free books by Percy Edward Raymond to read onlineMoreLess
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