The Encyclopaedia Britannica: A Dictionary of Arts, Sciences and General Literature, 10. köideThomas Spencer Baynes, William Robertson Smith R.S. Peale, 1890 |
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Page 326
... general use . Cambrian , Silurian , Devonian , Permian , Jurassic , are of this class , and have been adopted all over the globe . | disappearance and extinction of graptolites and trilobites , and 326 [ VI . STRATIGRAPHICAL GEOLOGY.
... general use . Cambrian , Silurian , Devonian , Permian , Jurassic , are of this class , and have been adopted all over the globe . | disappearance and extinction of graptolites and trilobites , and 326 [ VI . STRATIGRAPHICAL GEOLOGY.
Page 327
... trilobites , and the. But whatever be the name chosen to designate a particu- lar group of strata , it soon comes to be used as a chronologi- cal or homotaxial term , apart altogether from the strati- graphical character of the strata to ...
... trilobites , and the. But whatever be the name chosen to designate a particu- lar group of strata , it soon comes to be used as a chronologi- cal or homotaxial term , apart altogether from the strati- graphical character of the strata to ...
Page 329
... trilobites , and the abundance of its cryptogamic terrestrial flora . CAMBRIAN . great upward extension were more forcibly urged than ever . But these claims could now be urged on palæontological evidence such as had never before been ...
... trilobites , and the abundance of its cryptogamic terrestrial flora . CAMBRIAN . great upward extension were more forcibly urged than ever . But these claims could now be urged on palæontological evidence such as had never before been ...
Page 330
... trilobites include the genera Agnostus , Anapolenus , Conocoryphe , Dikelocephalus , Erinnys , Olenus , and Paradoxides . The earliest phyllopods ( Hymenocuris ) and heteropods ( Bellerophon ) occur in these beds . The brachiopods ...
... trilobites include the genera Agnostus , Anapolenus , Conocoryphe , Dikelocephalus , Erinnys , Olenus , and Paradoxides . The earliest phyllopods ( Hymenocuris ) and heteropods ( Bellerophon ) occur in these beds . The brachiopods ...
Page 331
... trilobites , including the genera Agnostus ( 19 species ) , Cono- coryphe ( 13 ) , Olenus ( 21 ) , Paradoxides ( 9 ) . NORTH AMERICA . - Rocks corresponding in position and in the general character of their organic contents with the ...
... trilobites , including the genera Agnostus ( 19 species ) , Cono- coryphe ( 13 ) , Olenus ( 21 ) , Paradoxides ( 9 ) . NORTH AMERICA . - Rocks corresponding in position and in the general character of their organic contents with the ...
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abundant acid ancient angle appear augite axis basalt beds brachiopods carbonic carbonic acid centre century character chemical coal coast consists contains crust crystalline crystals deposit depth distance district earth equator eruption evidence existence feet felspar formations fossils Gaelic Galatia gallic acid galls galvanometer Gaur gelatin gems geological globe gneiss granite heat hornblende igneous igneous rocks important iron islands known lake land latitude lava less lime limestone longitude mass materials matter meridian metamorphic miles mineral mountain observed obtained occur ocean organic original orthoclase parallel Paris passing period plane portion present pressure produced quartz regions remains rise river rocks Roman round sand sandstone schists Scotland sediment shales side siliceous Silurian sometimes species square miles stones strata stream structure substance surface temperature thick tion town traced trilobites upper vapour vertical volcanic voyage whole