IOWA ACADEMY OF SCIENCES. 89 



more than 500 feet, occupied by the Lawrence shales, Platts- 

 mouth limestones, Platte shales, and certain other limestones. 



For the time the Stanton limestone was very well defined, 

 and is now easily recognized at the type locality. It is ques- 

 tionable whether the limits of this term should not be extended 

 slightly, and the name adopted, in place of Plattsburg and 

 Garnett. 



In 1873 Broadhead* called the lower and most important 

 beds of the limestones, which have since been called Garnett, 

 the ' ' Plattsburg group, ' ' giving as typical localities Plattsburg, 

 Parksville and Waldron, Missouri. He also called attention 

 to a limestone, upwards of six feet thick, which existed a few 

 feet above the main bed and which was usually exposed with 

 it. A detailed descriptive section is given. 



Nearly twenty years before, Hawnf recognized the lime- 

 stone at Plattsburg but gave it no specific designation, and 

 moreover he confounded it with the Bethany limestone exposed 

 thirty-five miles east of Plattsburg, and with the limestone 

 known locally as the latan, which outcrops about the same 

 distance west in the bluifs of the Missouri river. 



In 1884 Broadhead| gave a more complete description of his 

 "Plattsburg group," adding also that it was well exposed at 

 Eudora, Kansas, and was easily recognized in Johnson and 

 Wyandotte counties in the same state. 



In Kansas the limestone appears to be considered under 

 a variety of different names. Haworth and Kirk§ in the 

 Neosho River section called it the Burlington limestone, and 

 also the Garnett, and referred to doubtful correlations with 

 certain limestones on the Kansas river. Haworth and 

 Piattjl call it the Toronto limestone. The Ottawa limestone 

 of Haworthl probably is the same formation. In the follow- 

 ing year the same author** describes the Garnett or Burling- 

 ton limestone as a "system" composed of two main members 

 separated by eight to twelve feet of shale, and further says 

 that according to Bennett the heavy limestone at Plattsburg, 

 Mo., is equivalent to the upper Oread. The Garnett lime- 

 stone is the title by which the formation is known in the notes 



* Missouri Geol. Sur., Iron Ores and Goal Fields, pt. 11, pp. 94 and 111, 1873. 



f Missouri Geol. Sur., 1st and 2d Ann. Repts., p. 128, 1855. 



J Trans. St. Louis Acad. Scl., Vol. IV, p. 482. 1884. 



§ Kansas Univ. Quart., Vol. II, p. 110, 1894. 



II Ibid., p. 117. 



H Ibid., p. 121. 



•*Ibld.. Vol. Ill, p. 227, 1895. 



