THE Range of Some ok the Species of the Portage and Itha 

 IvOwer Portage. Ith. Sh. 



Stiriopora jneeki 



Zaphreniis simplex 



A ulopora sp 



Cladochonus sp 



Taxocrinus Wiacensis 



Arthroacantha sp 



Strophodonta mucronala 



Strophodonta perplana var. nervosa,, 



Slrophodonta demissa 



J^rodtifltlla liallana 



Produflilla speciosa 



Lingula spalulata 



Lingula complanata 



Lingula pnnflata 



Cyrlina hamiltoncnsis 



Amboctelia umbonata 



Spirifer lisvis 



Spirifcr mesastrialis 



Spirifer mesaeostalis 



Orlliis impressa 



Rliynclwmlla cximia 



Rhyncliouella puguus 



Lciorhyncluis mesaeostalis 



Cryptonella eudora 



Atrypa retieularis 



Chon , les sriliit,, 



Cl:„i„i,^ l.pida 



Coleohi^ oniiitiim 



Telllaciilites spieillus 



Conularia eougregata 



Pteuroiomaria capillaria 



• Bellen^plum Icda 



/?, //, ■/ , ph,.„ i I ha,, -II (M 



(n.iiifli.'.ei 



240 220 200 180 160 I 



I II mi dun 



Go. 



aliics diseoida 



Grammvsia subareiiala ,, 



Spalheila typim 



Gl^ptoea^-dia speciosa 



Schizodus chemungensis, 



Leda diverse 



I.iniitlifordiinii fras^ile. . 



/.epi.>,i,siiio w,a/e'. 



Mvlilaira fliriiiungeilsis. 

 Modioiiiorplio siibalata ' 

 fliierodoii bellistrialus, , , , 



Mierodon i^regariics 



Niieula eorbi'iliformis, , , . 



Niiciila diffidens 



paleeoneilo eonstriHa 



Paheoneih Jilosa 



. / vieiilopeeleii caneellahi 

 Pleiiiiop,;1en eireliis,,,, 

 Pleriiica ( Wriumilia ) . 



I'luuops ronn 



J'lKiiiulina pliimaria 



* The figures above each column 



t .Spiri/cr Irevis zone. 



ebe 



■eproba 



80 60 40 20 



t 20 40 60 Ho 



this table indicate the vertical distance ahove or below the upper Spirifer kfvis bed of the Portage. This table 



AT Ithaca. N. ¥.=■■ 



Ithaca Group. 



220 240 260 280 300 320 340 360 3S0 400 



.vhicb the Spirifer fcrv 



■ has been ascertained. 



