Maryland Geological Survey 



105 



Geological Range of Middle Devoxian Species in Maryland and New York. 





SPhXIES 



Maryland 



New York 





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Middle 

 Devonian 

 Romney 



Upper Devonian 

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Middle Upper 

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CCELENTERATA. 



Stereolasma rectum (Hall) 



Cf. Amplexus hamiltoniae Hall 



Heliophj'Uum sp 



Cj'Stiphyllura americanum Milne-Edwards & Haime 



VERMES. 





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MOLLUSCOIDEA— BRYOZOA. 



Rhopalonaria tenuis Ulrich & Bassler 



Monticulipora (?) marylanden.sis Ulrich & Bassler. 



MOLLUSOOIDE.\— BRACHIOPODA. 



Lingulella (?) paliformis Hall 



Lingula deUa Hall (?) 



Lingula ligea Hall (?) 





12 

 13 

 14 



IS 



Linprula cf. compta Hall & Clarke 



Linffula clarki Prosser 



Orbiruloidca lodiensis var. media Hall 





16 



17 



Pholidops hamiltoniiE Hall 





18 

 19 

 20 

 21 

 22 

 23 

 ?4 



Sfropheodonta (Ijeptostrophia) perplana (Oonrad). 



Stroplieodonta demissa (Conrad) 



Strophcodonta (Douvillina) inequistriata (Conrad) 



Strnphpodonta coneava Hall 



Phnlidostnvphia pennsylvanica Kindle 



Leptrfna rhomboidalis (Wilckens) 



Leptaenisca austral is Kindle 





25 



Srhuchertella variabilis Prosser 





27 

 28 

 29 

 30 

 31 

 32 

 33 



Clionetes coronatus (Oonrad) 



Chonetes scitulus Hall 



Chonetes seti^er (Hall) 



CTlmnetes Irpidus Hall 



Clionetes vicinas (Castelnau) 



Chonetes marvlandious Prosser 



Chonetes rusrosus Kindle 





34 

 35 



Annplia nncloata Hall 



Stroplialosia tnmcata (Hail) 





36 

 37 

 38 

 39 



Prod\ictel1a cf. spinulicosta Hall 



Productella ( ?) schucherti Prosser 



Dalmanclla lenticularis (Vanuxem) 



Rhipidomella vanuxemi Hall 





40 

 41 

 42 



Rhipidomella leucosia Hall 



Rhipidomella cvolas Hall (?) 





43 



Schizophoria st'riatula (Schlotheim) (?) 





.. ].. 



t = related fomi. 



