﻿1850.] CATULLO ON THE RED AMMONITIC LIMESTONE. 



73 



fied with biancone, which I observed near the eminence of the Piano 

 della Fagazza in Vallarsaf, and those also which I observed some 

 years back in a valley (Valgadena) which runs into the valley of the 

 BrentaJ. 



Thus in the upper epiolitic limestones of the district of Feltre (not 

 far from Cesio), as also in that of Cesuno near Tresche (Sette Co- 

 muni), of Entratico in the district of Bergamo, and of Perugia in 

 Romagna, individuals of the Terebratula antinomia are found, which, 

 as I have observed, have different forms from those which I have 

 hitherto remarked in the individuals from the neocomian limestones 

 (red as well as white) of the Tyrol (Fondo), of the Vicentine, and of 

 the Veronese. The same difference of form I have also remarked in 

 individuals of the same species, collected by Professor Pilla in the 

 schistose limestone of Spezia, where it exists associated with Ammo- 

 nites Tatricus and some Nerincece peculiar to the upper jurassic 

 system. 



The dark red schistose limestone of Spezia, to the palaeontology of 

 which we have just alluded, may serve as a geological horizon with 

 which to compare the analogous limestones of Lombardy, Tuscany, 

 and the Alps of Spoleto, already considered by Von Buch as rocks 

 belonging to the upper-jurassic period. This opinion, coming from 

 the Nestor of European geologists, has had a favourable reception 

 from the learned of all nations ; therefore the author of an article 

 inserted in the Bulletin of the Geological Society of France has 

 committed an error in classifying the limestone of Spezia as the lower 

 lias, because, mistaking the highest part of the jurassic formation for 

 the lowest, he was obliged to consider the saline marbles of Carrara 

 and Campiglia as rocks of the Devonian system, and, what is more to 

 our purpose, to sink the schists which underlie the same marbles 

 into the depths of the Cambrian system. 



Among the fossils of the upper epiolitic limestone, I have found 

 associated many species belonging to the neocomian formation, viz. 

 Ammonites bicurvatus, Michelin, A. simplus, D'Orbigny, and A. fas- 

 cicularis, D'Orbigny, Crioceras Villiersianus, D'Orbigny, and a few 

 Terebratulce, most of which may be referred to the cinctce group of 

 Von Buch. 



Ammonites of the Tipper Epiolitic Limestone. 



* Ammonites pulchellus ?, B'Orb. 



* simplus, B'Orb. 



* helius, B' Orb. 



emaciatus, Cat. 



— — bifrons, Bruguiere. 



• Tatricus, Pusch. 



sub-Beudanti, Cat. 



Ammonites bicingulatus, Cat. 



bicurvatus, Michelin. 



Capitanei, Cat. 



Venantii, Cat. 



Doderleinianus, Cat. 



Hamites Labatii, Cat. 



f Prodromo, p. 103. 



t Zoologia Fossile, pp. 89, 98. 



* The species marked with an asterisk are repeated in the beds of the neoco- 

 mian formation, while the others belong exclusively to the formation in which 

 they are found imbedded. 



