234 VERTEBRATES. 



Sandalodus laevissimus (NEWBERRY & WORTHEN). 



Sandalodus Icevissimus Newberry & Worthen, 1866: Geol. Sur. Illinois, 



vol. K, p. 104, pi. x, figs. 6, 7 and 8. 

 Sandalodus grandis Newberry & Worthen, 1866: Geol. Sur. Illinois, vol. 



II, p. 105, pi. x, fig. 9. 

 Deltodus grandis Newberry & Worthen, 1866 : Geol. Sur. Illinois, vol. II, 



p. 101, pi. ix, figs. 9, 9a. 

 Cochliodus ? crassus Newberry & Worthen, 1866 : Geol. Sur. Illinois, vol. 



II, p. 186, pi. viii,figs. 2, 2a. 



Psammodus ? semi-cylindricus Newberry & Worthen, 1866: Geol. Sur. Illi- 

 nois, vol. II, p. 109, Pi. xi, figs. 4, 4a. 

 Psammodus ? rhomboideus Newberry & Worthen, 1866 : Geol. Sur. Illinois, 



vol. II, p. 110, pi. xi, figs. 6, 6a. 

 Sandalodus Icevissimus St. John & Wortben, 1883 : Geol. Sur. Illinois, vol. 



VII, p. 186, pi. xii, figs. 8a-f. 



Horizon and localities Lo.wer Carboniferous, Keokuk 

 limestone : Boonville. 



Sandalodus spatulatus NEWBERRY <fe WORTHEN. 



Sandalodus spatulatus Newberry & Worthen, 1S66 : Geol. Sur. Illinois, vol. 



II, p. 103, pi. x, fig. 2. 

 Deltodus rhomboideus Newberry & Worthen, 1866: Geol. Sur. Illinois, 



vol. II, p. 100, pi. ix, fig. 8. 

 Sandalodus crassus Newberry <fc Worthen, 1870: Geol. Sur. Illinois, vol. 



IV, p. 369, pi. iv, fig. 3. 

 Sandalodus spatulatus Sk John & Worthen, 1883 : Geol. Sur. Illinois, vol. 



VII, p. 188, pi. xii, figs.7a-f. 



Horizon and localities. Lower Carboniferous, Saint Louis 

 limestone : Saint Louis. 



Sandalodus crassus NEWBERRY & WORTHEN. 



Sandalodus crassus Newberry & Worthen, 1870: Geol. Sur. Illinois, vol. 



IV, p. 369, pi. iv, figs. 3-3a. 



Horizon and localities Lower Carboniferous, Saint Louis 

 limestone : Saint Louis. 



Orthopleurodus carbonarius (NEWBERRY & WORTHEN). 



Sandalodus carbonarius Newberry & Worthen, 1866: Geol. Sur. Illinois, 



vol. II, p. 104, pi. x, figs. 4, 5. 

 Dellodus angularis Newberry & Worthen, 1866 : Geol. Sur. Illinois, vol. 



II, p. 104, pi. ix, figs. 4, 5. 

 Orthopleurodus carbonarius St. John & Worthen, 1883: Geol. Sur. Illinois, 



vol. VII, p. 192, pi. xiii. fig. 6a. 



Horizon and localities Upper Carboniferous, Upper Coal 

 Measures : Kansas City ? 



