Tlic Fauna of the Maxvillc Limestone. 419 



Orthonychia acutirostre 406-408 



acutirostris 407 



Orthothetes crassus 369 



Pelecypoda 390-395 



Pentremites elegans 360-361 



Pinna maxvillensis 391-392 



Platyceras acutirostris 406 



uncum 406 



Polyphemopsis melaiioides 399 



Productus cestriensis 372-375 



elegans 372, 373 



pileiformis 370-372, 874 



tenuicostus 372 



Retzia vera 386 



vera var. costata 386 



vcrncuiHaiia 386 



Rhombopora armata 366 



Scaphopoda 395-396 



Seminula subquadrata 375, 877, 388-385 



Schizodus chesterensis 390-391 



Septopora rectistyla 363-364 



Shale — nodular zone 357 



Soleiiospira vennicula 409 



Southern Area 357 



Sphserodoma subcorpulenta 401-402 



Spirifer afteniiatKS 377 



glabcr 375 



glaber var. contractu 375 



increbescens 380, 381 



increbcscens 877, 379 



keokuk 377-381 



keokuk var 877, 378, 380 



opimus 380 



rockyinoiitana 377 



rockymontani 380 



rockymontanus 880, 881 



Spirifera contractu 875, 376 



contractus 375 



glabra var. con tracta 375 



keokuk 377, 378 



keokuk var 378 



opiina 878 



rockvmontana 878, 37ft 



