﻿56 



MR. S. S. BUCKMAST ON CERTAIN 



Table II. —Correlation. 

 Part of Table bv Dr. Erich Mascke. 1 



[Feb. 1 910, 



S. BUCKMAN. 



E. Mascke, 

 North Germany. 





Parkmso?iia-z(me. 



Strigoceras truellii. 



Park, garantiana. 



Garantiana-zone. 



Strenoc. niortense. 



oben Strenoc. niortense, d'Orb. 

 Teloceras-zone. 



Coeloceras 

 hlagdeni. 



Stepheoceras-zone 

 uiit 

 Dorsctensia complanata, Buckm. 



Stephauoceras-zone. 



Stemmaioceras-zone 



111 it 



Witchellia edouardi, Sow. 



Spharoc. (?) sauzei. 



Otoites-zone. 

 Witchellia f. 



Emileia-zox\Q. 

 Witchellia f . 



Witchellice sp. 



Son ninia-zone. 

 Witchellia f. 



Sonninia sp. 



of these divisions was noted in my Sherborne paper. On p. 501 

 it is said : 



• Bed 5 [of Frogden], with the numerous large specimens of Stephanoceras 

 £an/csi... meais to be a separable, third portion of the Ironshot'; [and on p. 517:] 



* I think it possible that this [division] is an horizon which has escaped notice 



in our own country The biological characters [of certain ammonites] 



suggest that they may have lived in a hemera between that of Sauzei and 

 Humphries km urn.' (Quart. Journ. Geol. Soc. vol. xlix, 1893.) 



Thus the sequence expected in our thin beds was : 



Niortensis, 



Banksi, 



Httmphriesiani 



i n t er Humphricsian i- Sauzei, 



Sauzei ; 



and this is the stratal sequence which Dr. Mascke has been able 

 to prove in the thick deposits of JSorth Germany. It has not 

 seemed necessary to adopt his divisions in the present paper, be- 

 cause the deposits of those dates are so indistinct in South Dorset; 

 but any future investigator in the Sherborne District should find 

 them very useful. 



1 ' Die Stephanoceras-Vevv/nndten in den Coronatenschichten von Nord- 

 Deutschland ' Inaugural-Dissertation, Gottingen, 1907, p. 16. 



