112 POMPECKJ. JURASSIC FAUNA OF CAPE FLORA. [norw. pol. exp. 



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

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

 arctica: This species belongs to the Lower Gallovian in the Russian ^ 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 Wiirttemberg 3. 

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

 Gallovian of Gzenstochau, but with the remark that the form described does 

 not quite agree with Nikitin's species. 



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

 end of Windy Oully, the occurence of the 

 Lower Gallovian = zofie of Macrocephalites macrocephalus Schloth. sp. 



= zone of Gadoceras Etatmce 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 Gallovian^. 



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

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

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



' E. von Eichwald (Geognostisch Paleontologisch Bemerkungen iiber die Halbinsel 

 Mangischlak und die Aleutischen Inseln, p. 146. PI. VIII, figs. 4—5; PI. XI, fig. 5; 

 PI. X, figs. 3—7) records an Ammonites Ishm,ce 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 Gadoceras Tchef- 

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

 Gadoceras (not Olcostephanus, as Neumayr believed) Doroschini Eichvy. sp. to the 

 Gallovian. 



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 zwischen der russischen und westeuropaeischen 

 Juraformation', Neues Jabrb. 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 g^ol. 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 musees et dans les terrains mi5sozoiques de I'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. PL XXVI, fig. 17. 



^ It IS thus very probable that Macrocephalites Ishmce Keys. sp. from the Petchora 

 basin also belongs to the Lower Callovian. 



