352 



They indicate in a way more or less general, the striking 

 peculiarities of the strata or groups at different remote points : 

 variations of petrology; the predominance of particular fossils; 

 their presence or absence ; whether a shore or deep sea deposit, 

 &c., thence we can in a measure iafer something real as to their 

 horizon and range. Synonyms may in this light be regarded as 

 in some degree, formulated expressions employed to qualify and 

 distinguish subdivisional groups of strata. 



Names. 



ENGLISH. 



Autlwrs. 



Localities. 



1815 Blue Lias Marl (pars supra) 



1822 Upper Marls 



1823 Micaceous Marl De la Beche... 



1845 Marlstone (pars supra) ... Muechison 



1858 Ironstone series (pars supra) Phillips 



1863 Spinatus bed Weight 



1875 Spinatus Zone Judd 



1876 Zone of Ammonites Spinatus Tate and Blake 



W. Smith England 



CoNYBEAEE kKD PHILLIPS England 



. ... Dorsetshire 

 Gloucestershire 



Yorkshire 

 ... South of England 



Rutland 

 ... Yorkshire 



GERMAN. 



1836 Schichten mit Am. costatus 



und Turbo cyclostoma F. A. Romek 



1843 ( Costatus kalk ) 



to .^ Amaltheenthone \ Quenstedt 



1856 (Lias Delta ) 



1853 Region des Am. costatus ... Oppel 



1856 Die schichten des Am.spinatus Oppel 



1860 Horizont von Am. spinatus Wagenee 



1863 Zone des Am. spinatus ... Schlonbach 



1870 Schichten des Am. spinatus Embkson 



1871 Die Amaltheenthone (pars 



supra) Brauns 



FRENCH &c. 



1846 Mames a plicatules Maecou 



1857 Calcaire a Am. spinatus et 



Gryphee cymbium Maecou 



1846 Calcaire a Gryphee cymbium Cotteau 



1854 Macigno d'Aubange Dewalque et Chapuis 



1860 LaZoneaAmmonitesspinatus Deslongchamps, fils 



1869 La Zone a Pecten sequivalvis 



(pars supra) Dumoetiee 



North Germany 

 Wiirtemburg 



South Germany 



Suabia 

 , Falkenhagener 



North Germany 

 , Luithorst 



N.West Germany 



Jura salinois 



Burgundy 

 Cote d'Or, &c. 

 Luxemburg & the 

 Moselle 

 Calvados 



Lyonnais 



