Geological Survey of Illinois volume 7
Geological Survey of Illinois volume 7
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In our eReader you can find the full English version of the book. Read Geological Survey of Illinois volume 7 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 Geological Survey of Illinois volume 7
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The species above noticed is one of the handsomest of the genus. The specimen figured is the most perfect, but other fragments have been obtained indicating larger-sized spines equally strongly marked by the distinctive features of the species, and which readily dis- tinguish it from any allied form known to us. In the deflected costae along the posterior margins it bears some resemblance to Ctenacanthus deflexus of the St. Louis limestone, but is otherwise markedly distinct from that species, ...as will be apparent on compar- ing the illustrations given of each respectively. This is one of the many interesting discoveries of the remains of fishes in our Coal Measure strata made by Mr. Alexander Butters, in whose honor the specific name is given.
Geological position and locality: Lower Coal Measures (roof shales over coal No. 5, Illinois general section) : Carlinville, Illinois.
GENUS ACO^DYLACA^THUS, St. J. And W.
ACONDYLACANTHUS BECTUS, St. J. And W. PL. XXVI. Fig. 2.
Dorsal ray of small size, slightly arched along the sharply-rounded anterior edge, moderately compressed laterally, and very gradually tapering throughout its length.
What to read after Geological Survey of Illinois volume 7?
You can find similar books in the "Read Also" column, or choose other free books by Illinois State Geologist to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The species above noticed is one of the handsomest of the genus. The specimen figured is the most perfect, but other fragments have been obtained indicating larger-sized spines equally strongly marked by the distinctive features of the species, and which readily dis- tinguish it from any allied form known to us. In the deflected costae along the posterior margins it bears some resemblance to Ctenacanthus deflexus of the St. Louis limestone, but is otherwise markedly distinct from that species, ...as will be apparent on compar- ing the illustrations given of each respectively. This is one of the many interesting discoveries of the remains of fishes in our Coal Measure strata made by Mr. Alexander Butters, in whose honor the specific name is given.
Geological position and locality: Lower Coal Measures (roof shales over coal No. 5, Illinois general section) : Carlinville, Illinois.
GENUS ACO^DYLACA^THUS, St. J. And W.
ACONDYLACANTHUS BECTUS, St. J. And W. PL. XXVI. Fig. 2.
Dorsal ray of small size, slightly arched along the sharply-rounded anterior edge, moderately compressed laterally, and very gradually tapering throughout its length.
What to read after Geological Survey of Illinois volume 7?
You can find similar books in the "Read Also" column, or choose other free books by Illinois State Geologist to read onlineMoreLess
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