774 



CHALMER L, COOPER 





TIME RANGE 



OF PALEOZOIC OSTRACOOE GENERA 







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1 



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2 



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1 



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Si 



< 

 cr 



Acanthoacapha 



Acratla 



Acronotella 



Aechmloa 



Aechmlnarla 



Aechminella 



Alanella 



Alloatraca 



Amphlaaltea 



Anlaochlllna 



Antltomla 



Aparchltea 



Apatobolblna 



Apatochlllna 



Ardmorea 



Argllloecla 



Artlfactella 



Aurlgerltea 



Balrdla 



Balrdlacyprla 



Balrdlanella 



Barldlolltea 



Balrdltea 



Balantoldea 



Baltlcella 



Barychlllna 



Baaaleratla 



Baaalerella 



Beecherolla 



Bellornatla 



Bernlx 



Berounella 



Beyrlchla 



Beyrlchlana 



Beyrlchlella 



Beyrlchlopala 



Blcornella 



Blnodella 



Blrdsallella 



Bolblbollla 



Bolblprlmltia 



Bolbozoe 



Bollla 



Bonnemala 



Boucla 



Bouraella 



Bradyclnetua 



Broraldella 



Budnlanella 



Buflna 



Burlella 



Bursulella 



Bythocyprla 



Bythocythere 



Candona 



Carbonlta 



Carboprlmltla 



Cavelllna 



Cavelllnella 



Ceratocyprla 



Ceratopsls 



Chesterella 



Chllobolblna 



Coelochlllna 



Coelonella 



Colpoa 



Conchoprlmitla 



Cooperatia 



Cornlgella 



Coryelllna 



Coryellltes 



Craapedobolblna 



Crlbroconcha 



Ctenobolblna 



Ctenolocullna 



Ctenonotella 



Cyathua 





_.. 



~ 



- 







Cyprella 7 



Cyprldolla 7 



Cyprldelllna 



Cyprldina 



Cyprldinalla 



Cyproalna 



Cyproala 



Cyrtocyprls 



Cythere 



Cytherella 



Cytheropsls 



Darwlnula 



Delola 



Denlaonella 



Dlbolblna 



Dicranella 



Dlhogmochlllna 



Dilobella 



Dlacoldella 



Dlzygopleura 



Drepanella 



Drepanelllna 



Ectodemltes 



Elleamorla 



Elllpaella 



Elpe 



Entomidella 



Entomia 



Entomoconchua 



Eoconchoecla 



- 



— 





:£ 







^ 



- 





-" 





— 



^ 





— 



^ 





- 



— 



— 



- 

















































— 









1 Eucraterelllna 



— 1 Euglyphella 



— n Bukloedenella 



Euprlmltla 



Eurychlllna 



Euatephanella 



Favulella 



Oeffonlna 



Geffenltea 





. 





* 





•_ 



— 









— 





Gllllna 



Glyptopleura 



Glyptopleurlna 



Glyptopleuroidea 



Colcondella 



Graphladactyllla 



Uallatla 



Halllella 



Hamlltonella 



Haploprlmitla 



Hardlnla 



Harl tonella 



Haatacyprla 



Haworthlna 



Healdla 



Healdlacyprla 



Healdloldes 



Hesperldella 



Heterochlllna 



Hlppa 



Hollina 



HolUnella 



Holtedahlltes 



Hyphasmaphora 



Hypotetragona 



Inclsurella 



laochlllna 



Janetlna 



Janischewakya 



Janusella 



Jennlngalna 



Jonesella 



-\ 







- 



--- 



' 



- 







^^^ 









-~" 



** 







- 



- 



^^ 



1 



- 



— 







- _ 





--- 



- 



- 



- 





Joneslna 

 Joneaitea 

 Karlateinella 

 KellettellB 





- 





Fig. 8. — Stratigraphic distribution of Paleozoic ostracode genera: Acanthoscapha- 

 Kellettella. (Condracypris, L. Devonian, should be added to the left column). 



