ON THE FOSSIL CRINOID FAMILY CATILLOCRINIDAE 

 By frank springer 



associate in paleontology, united states national museum 

 (\\'iTH Five Plates) 



CONTENTS p^(,^ 



Historical introduction 2 



Mycocrinus, discussion of 5 



Changes toward Catillocrinus 7 



Catillocrinus, discussion of 7 



Composition of base g 



Asymmetry of radials 15 



Modification in later species 16 



The anal tube 17 



Relations with other genera 19 



The arms 20 



Comparative table of species 22 



Resume of characters 22, 



Family Catillocrinidae 23 



Genus Mycocrinus 24 



Mycocrinus boletus Schultze 24 



M. granulatus Jaekel 24 



M. conicus new species 25 



Genus Catillocrinus 25 



Catillocrinus tenncsseeae (Troost) Shuniard 26 



C. turbinatus new species 26 



C. wachsmuthi Meek and Worthen 26 



C. shumardi new species 27 



C. bradlcyi Meek and Worthen 27 



C. carpcntcri (Wachsmuth) 28 



Genus Paracatillocrinus Wanner 28 



New species of collateral genera 29 



Synbathocrinus hamiltonensts 29 



S. onondaga 29 



Phimocrinus amcricanus 30 



Stratigraphic position of the Timor Crinoids .• 30 



Smithsonian Miscellaneous Collections, Vol. 76, No. 3 



