TABLE SHOWING THE DISTRIBUTION OF THE FOSSIL ESTHERLE. 



:■■<.!>■ Hi. 



IIEOI.OGICAI, STACKS, 



Huitisu Isles. 



NORTH AMERICA. 



SOUTH AMERICA, 



ESTIIKRLE. 



Teiutauy 



'Cretaceous. 1 

 Wf.alden .... 



Jurassic . 



Rustic 2 , 



Trias 



Carboniferous . 



Old Red Sandstone . 



foiir-i^nge doubtful) 



Sussex. Purbeck (?) , 



| Oxfurdinn, Skye 

 Lower Oulite, Scarborough 

 Liuksfield, Elgin 

 Warwickshire 



I Gloucestershire 

 Somersetshire 

 Leicestershire 

 Warwickshire 

 Worcestershire 

 Somersetshire 

 Rhone Hill, Tyrone 



Upper Coal-measures, 

 Manchester 



Coal-measures, Derbyshire 

 and Lanarkshire 



Lower Carboniferous, Ber- 

 wickshire 



[Leaia 3 occurs in the Upper 

 Coal-measures of Lanca- 

 shire, and Lower Carboni- 

 ferous of Fifeshire] 

 Caithness and Orkney 



Hanover 



Kotab, on the Prauhita 



( MangaliaudPau- 

 t cheet 



r Pennsylvania, Eastern *\ 

 < Virginia, and North > 

 V. Carolina J 



Permian (?) or Upper 

 Carboniferous (?), 

 Autun 



Lower Carboniferous, 

 Belgium 



Hanover and Wurtembcrg 



Lower Permian, Saxony 



Permian (?) or Upper 

 Carboniferous (?), 

 Murgthal 



Kargala, &c. 



Lower Carboniferous, 

 Silesia and Bavaria 



[Leaia occurs in the Lower 

 Carboniferous of Penn 

 sylvania.] 



Livonia. 



Estheriu Mitldendorjii !). 



Estheria elliptiea, and A', ellij/tica, var. sub- 



i asm, 

 I qut 



quadrata. 



( Estheria Murc/iisoniie, E. cnucentricu, and E. 

 (. Kotahensis. 



(Estheriu minuta, var. Brorfieana, E. Manga- 

 {, lie/isis (?), E. ova/a (?), and E. Forbesii (?). 



Estheria minuta. 



Estheria Portlockii, E. tenella, and E. exigua. 



Estheria tenella aud E. striata and its varieties. 



Estheria memb, 



1 No fossil Estheria are as yet referred to this period, excepting those of the Wealden formation (representing some of the freshwater deposits of the period). There is, however, the possibility of either or both of the Siberian and the South American Estherice described above being of this ago. 

 a The adoption of this stage for the Est/ierim from India and America is merely provisional ; they may bo Triassic. 

 3 See the Appendix. 



