138 POMPECKJ. JURASSIC FAUNA OF CAPE FLORA, [norw. POL. EXP. 



Gadoceras stenolobum [Keys.] Nik. 



„ Frearsi (d'Orb.) Nik. 

 Quenstedtoceras vertumnum Sintz. 

 are species which are also peculiar to the Callovian of central and northern 



Russia. 



Macrocephalites Koettlitzi n. sp. 



„ Ishmx var. artica E. T. Newton. 



Gadoceras Nanseni n. sp. 



„ sp. ex. aff. Nanseni n. sp. 



are forms which are very closely allied to Russian ones, especially those 

 from the Callovian of the Petchora region. 



Belemnites m. f. subextensus Nik. — Panderi d'Orb., which is of fre- 

 quent occurrence in the Middle Callovian of Cape Flora, is remarkable for 

 its close affinity to a species of the Russian Middle Callovian, Belemnites 

 subextensus Nik. 



Among the Lamellibranchiata of the Callovian, 

 Macrodon Schourovski F. Rouill. sp. 

 Leda cf. nuda Keys. sp. 

 Pecten Lindstromi TuUbg. 

 point partly to the Russian fauna, partly, like Pecten Lindstromi, to a fauna 

 similar to the Russian. 



These facts will be sufficient to place the fauna of the Callovian of Cape 

 Flora very near to that of the Russian Callovian. Our Gallovian fauna is 

 nothing but a part of the fauna of the Russian Callovian. 



Close faunistic relations exist, moreover, to the fauna of the Callovian 

 of Alaska from which district we are acquainted, through Grewingk^ and 

 Eichwald^, with Ammonites that have the closest affinity to Gadoceras Tchef- 

 kini d'Orb. sp. — i. e. Gadoceras Wossnessenski Grew, sp., Gadoceras 

 Boroshini Eich w, sp., Gad. Ishmoe Eichw. sp. (not Macrocephalites Ishmce 

 Keys. sp.). 



^ C. Grewingk, 'Beitrag zur Kenntnis der orographischen und geognostischen Beschaf- 

 fenheit der Nordwestkiiste Amerikas mit den anliegenden Inseln.' Verhandl. d. Russ. 

 Kais. Mineral. Ges. St. Petersburg, 1848, 49, p. 344. 



2 E. V. Eichwald, 'Geognostisch-Palaeontologische Bemerkungen tiber die HalbinseJ Man- 

 gischlak und die Aleutiachen Inseln.' 1871. 



