Sentence examples for Bashkirian from high-quality English sources.

  • A definition for the top of the Bashkirian Stage is currently being evaluated.

  • The Moscovian Stage overlies the Bashkirian Stage and underlies the Kasimovian Stage of the Pennsylvanian Subsystem.

  • The top of the Serpukhovian is overlain by the Bashkirian Stage of the Pennsylvanian Subsystem and corresponds to the internationally accepted boundary drawn at the appearance of the conodont Declinognathodus noduliferus.

  • Bashkirian Stage, first of four internationally defined stages of the Pennsylvanian Subsystem of the Carboniferous System, encompassing all rocks deposited during the Bashkirian Age (323.2 million to 315.2 million years ago).

  • The base of the Bashkirian Stage is defined to correspond to the internationally accepted Mississippian-Pennsylvanian boundary, drawn at the appearance of the conodont (a primitive chordate with tooth-shaped fossil remains) Declinognathodus noduliferus.

  • The Mississippian Subsystem is made up of the Tournaisian (deposited 358.9 to 346.7 million years ago), Viséan (346.7 to 330.9 million years ago), and Serpukhovian (330.9 to 323.2 million years ago) stages, whereas the Bashkirian (323.2 to 315.2 million years ago), Moscovian (315.2 to 307 million years ago), Kasimovian (307 to 303.7 million years ago), and Gzhelian (303.7 to 298.9 million years ago) stages make up the Pennsylvanian Subsystem.

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        • 6 sentence examples for Bashkirian from Encyclopedia Britannica