676 G. M. MURGOCI 



Mirlesti-Petreni, where the deposits overlie the Jurassic massif of 

 Bistrita. Between Cozia and the south boundary of the Paleogene 

 formations I can distinguish three horizons. 



1. Lower, lying to the north of the line Dangesti-Calimanesti- 

 Olanesti-bai-Cheia, a zone of sandstone with hieroglyphs and Strzalca 

 structure, conglomerates, and a few marls with fucoids. In their 

 highest beds the silicious conglomerates and grits contain, as men- 

 tioned above, huge blocks of Hippurites limestone, which are to be 

 found in every valley from Arifu up to Cheia. Orbitoides and Num- 

 mulites (Nummulites Lucassana, N. perforata, etc.) have been found 

 here, proving it to be the Middle Eocene. Last summer Gr. Stefa- 

 nescu found at Calimanesti, in these conglomerates, Cerithium 

 giganteum Lam., which was found also by Sabba Stefanescu at the 

 prolongation of these beds at Salatrucu in the Topologa valley. 



2. Middle. — -There now comes a zone of marls with a few sand- 

 stone and sand beds, which give their character to a region of meadows 

 between Jiblea and Cheia (the meadows of Jiblea, Calimanesti, 

 Muereasca, Olanesti, Tisa, and Cheia). 



In repeated sandstone beds in the Puturosita ravine (Calimanesti) 

 in the Purdoi bank and the Olanesti village, I have found 1 the follow- 

 ing fossils, which are identified by Professor A. Koch of Budapest: 



Nummulites Bucheri De la Harpe Nodosaria latijugata Gumb. 

 Nummulites Tournoueri De la Harpe Nodosaria baccillum Defr. 



Nummulites Budensis Hant. Heterostegina sp. 



Nummulites aff. Madariszi Hant. Cidaris cf. subularis D'Arch. 



Orbitoides papiracea Boubee Maeandroseris (?) 



Orbitoides aspera Gum. Bourgueticrinus elipticus D'Orb. 



Orbitoides applanata Gum. Bourgueticrinus Thorenti D'Arch. 



Operculina cf. ammonea Leym. Bryozoa, Cidaris, Cerithium 



Alveolina cf. Bosci D'Orb. Cardium, Cardita, Ostrea, etc. 



From this fauna Professor A. Koch concludes that we have here 

 to do with the Upper Eocene, but the presence of Operculina ammonea 

 gives us a transition to the Middle Eocene, and that of Nodosaria 

 latijugata and other fossils a transition to the Lower Oligocene. 

 Sabba Stefanescu, who studied this horizon in the Topologu and 

 Argesu valleys is similarly of opinion that this marly facies began to 



1 I have described these localities in Gisements du Succin de Roumanie. Assoc. p m 

 In. si Resp, Sciintetor, 1903, Mem. Congres Iasi. 



