DIY History | Transcribe | Scholarship at Iowa | Coal Measures and Coal Mining in Iowa, including paleontology and a discussion on the coal formation; also the methods of mining by Russell T. Hartman, 1898 | Coal Measures and Coal Mining in Iowa by Russell T. Hartman, 1898, Page 78

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Coal Measures and Coal Mining in Iowa, including paleontology and a discussion on the coal formation; also the methods of mining by Russell T. Hartman, 1898

Coal Measures and Coal Mining in Iowa by Russell T. Hartman, 1898, Page 78

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[page]77.[/page] one third the length of the valve, prominent; muscle attachments well defined, fanlike, dental laminar prominent. Surface marked by small radial costae which increase in number by insertion of other costae toward the anterior and lateral margins; also marked by folds of growth which on the dorsal valve have a rugose appearance. Geol. Pos. and Loc. Coal Measures of Iowa, Illinois Nebraska, etc. [underlined]Meekella striato-costata.[/underlined] Plate VI. figure 3. Plicatula striato-costata, Cox, 1857, Owen's Geol. Report of Kentucky Vol. III. Orthis striato-costata, Geinitz, 1866, Carb. and Dyas in Nebraska. Meekella striato-costata; White and St. John.