^•yi-.33 



Kansas University Quarteely. 



Vol. 9, No. 1. JANUARY, 1900. Series A. 



NEW BRYOZOANS FROM THE COAL MEASURES OF 

 KANSAS AND MISSOURI. 



Contribution frcm the Paleontological Laboratory No, 52. 



BY AUSTIN F. ROGERS. 

 With Plates I, II, III, IV. 



nnHE bryozoans occurring in the Coal Measure rocks have received 

 -*- but comparatively little attention. In thefaunallistsof the hori- 

 zons the information concerning the bryozoans is usually of the most 

 meager character. Although they are small and often poorly i)reserved, 

 the difficulties in the way of their satisfactory determination are but 

 little if any greater than with other groups of fossil invertebrates. 

 Their characters are, as a rule, extremely constant. It is the writer's 

 conviction that the value of bryozoans in the correlation of the above- 

 mentioned rocks is as great as that of any other group, and conse- 

 quently that they should receive more attention. 



Forty-two well-defined species have been described from the Coal 

 Measures of the United States, of which number Ulrich is the author 

 of twenty-six; Foerste, six; Meek, five: White, two; Prout, Swallow, 

 and Worthen, one each ; to which the author here adds twenty-two. 



Unless otherwise stated, the specimens described in this ])aper were 

 collected by the writer, except those from Topeka, Kan., whicli were 

 obtained by Dr. J. W. Beede, to whom I am greatly indebted for this 

 and other favors. 



In the classification and in the sequence of the parts of the descrip- 

 tions, Ulrich, the authority on American paleozoic bryozoa, has been 



closely followed. 



BATOSTOMELLID.E Ulrich. 



Sfenopora spimilosa, n. sp. Plate IV, fig. 5. 

 Zoarium a thin, expanded crust, attached to a brachiopod {Derhya 

 crassa), from which proceed several cylindrical stems, 2 mm. in diam- 

 eter. Surface raontiferous, exhibiting slightly elevated monticules, 



l-K.U.Qr. A-ix 1 



