Handbook of Paleontology 325 



of the brachiopod Hyattidina congesta. The overlying 

 thicker beds which for the present are also referred to 

 the Reynales limestone consist of dark-gray or bluish, 

 even-grained, sometimes dolomitic limestone. The up- 

 per five feet contain some nearly pure limestone layers 

 filled with the brachiopod Pentamerus oblongus, from 

 which formerly this formation was called the "Penta- 

 merus limestone" of the Clinton (Hall). The middle 

 member is the most highly dolomitic and most persistent, 

 but sparingly fossiliferous, the brachiopod Strick- 

 landinia canadensis being the only species that is par- 

 ticularly characteristic, though Anoplotheca hemispheric a 

 makes its appearance for the first time. The fauna of 

 the Reynales limestone is of southern origin, as also the 

 later Wolcott. While the name is provisionally adopted 

 for all of this limestone, it is believed (Ulrich) that this 

 name should be restricted to the lower four or five feet 

 (the typical Reynales) which alone are present at Rey- 

 nales Basin. This formation pinches out about 100 miles 

 east of Rochester at some place beyond Lakeport. The 

 Reynales has been identified (Hall; later Hartnagel) with 

 the Wolcott limestone, but the latter does not extend 

 as far west as Rochester. 



The Fumaceville iron ore (Hartnagel '07) was named 

 from its typical development at Fumaceville in Wayne, 

 county where the ore has been worked for years. This 

 ore bed does not occur in the Niagara section but is 14 

 inches thick in the Rochester section, increasing farther 

 east to a maximum of two and one-half feet. The Clin- 

 ton ore beds going west to east progressively die out 

 eastwardly, new and always higher beds coming into the 

 section. The oldest (Fumaceville) alone is present in 

 the Rochester belt. At Wolcott, Wayne county, the ore 



