112 POMPECKJ. JURASSIC FAUNA OF CAPE FLORA. [NORW. POL. EXP. 



species belongs to the Callovian 1 . But Macrocephalites pila Nik. occurs at 

 Windy Gully together with Macrocephalites Kcettlitzi n. sp. and Ishmce var. 

 arctica: This species belongs to the Lower Callovian in the Russian 2 govern- 

 ment Tambow (Elatma) in the Crimea, in the south-western part of Ustj-Urt. 

 It further occurs in the corresponding horizon of the Jura of Wurttemberg 3 . 

 Bukowski 4 indeed, records Macrocephalites pila from Poland, from the Upper 

 Callovian of Czenstochau, but with the remark that the form described does 

 not quite agree with Nikitin's species. 



By the discovery of Macrocephalites pila Nik. at the south-western 

 end of Windy Gully, the occurence of the 

 Lower Callovian = zone of Macrocephalites macrocephalus Schloth. sp. 



= zone of Cadoceras Elatmce Nik. 



was proved in this locality, at a height of about 400 ft. above the sea. 

 At the same time, the age of Macrocephalites Kcettlitzi n. sp., and Ishmce 

 var. arctica E. T. Newton, as well as of the remains of large belemnites 

 found at Windy Gully in phosphoritic nodules, is thereby determined as 

 Lower Callovian 5 . 



[Besides phosphoritic clay with Macrocephalites Kcettlitzi, and the phos- 

 phoritic nodules, Prof. Nansen also collected at Windy Gully several pieces 

 of hard, yellowish-gray marl ("Steinmergel") containing 



1 E. von Eichwald (Geognostisch Palcontologisch Beraerkungen fiber die Halbinsel 

 Mangischlak und die Aleutischen Inseln, p. 146. PI. VIII, figs. 45; PI. XI, fig. 5; 

 PI. X, figs. 37) records an Ammonites Ishmce from the Neocomian from Alaska, and 

 from the Chinese bay north of Cape Unalischaglak. The forms in question certainly 

 do not belong to Macrocephalites Ishmce Keys sp., but are allied to Cadoceras Tchef- 

 kini d'Orb. sp. Moreover, they do not belong to the Neocomian, but, together with 

 Cadoceras (not Olcostephanus, as Neumayr believed) Doroschini Eichw. sp. to the 

 Callovian. 



2 The best information upon the distribution of the Ammonites in the various zones of 

 the Russian Callovian is to be had from the following works: 



S. Nikitin, 'Ueber die Beziehungen zwischeu der russischen und westeuropaeischen 



Juraformation', Neues Jahrb. f. Min. etc. 1886. vol. II, pp. 212-230. 



B. Szemenoff, 'Versuch einer Anwendung der statistischen Methode zum Studium 



der Verteilung der Ammoniten im russischen Jura'. Annuaire g6ol. et min. vol. II. 



Book VI. 

 8 F. A. Quenstedt, 'Die Ammoniten des Schwabischen Jura*. PI. 76, figs. 12, 13. S. Niki- 



tin, 'Quelques excursions dans les musses et dans les terrains mesozoiques de 1'Europe 



centrale". Bull, de la soc. Beige de Geol. etc. vol. III. 1889. p. 36 

 * G. von Bukowski, 'Ueber die Jurabildungen von Czenstochau in Polen'. Beitr. z. 



Palaeontologie Oesterreich-Ungarns, etc. 1887 ol. V p. 126. PI. XXVI, fig. 17. 

 ' It is thus very probable that Macrocephalites Ishmce Keys. sp. from the Petchora 



basin also belongs to the Lower Callovian. 



