L. F. Spath—Ammonites from Spitsbergen. 297 
On Ammonites from Spitsbergen. 
By L. F. Sparu, M.Sc., F.G.S8. 
F the rich collections of fossils made by Professors J. W. Gregory 
and HE. J. Garwood, as members of Sir Martin Conway’s 
expedition to Spitsbergen in 1896, only a few Labyrinthodont 
remains, so far, have been described 1; but through the kind offices 
of Dr. A. Smith Woodward, the writer some time ago was entrusted 
with the naming of the Cephalopoda in those collections. The 
Ammonites are of the greatest interest, both from a paleontological 
and a stratigraphical point of view ; and in view of the impossibility 
of publishing, in the near future, a full description of the fauna, with 
the necessary number of plates, it is intended to give a short 
preliminary account of these Cephalopoda. It is matter for regret 
that other groups of invertebrate fossils, such as the Triassic 
Pelecypoda, or the Upper Jurassic Aucellids, could not be dealt with, 
and their detailed study, probably, would yield important results. 
Spitsbergen Vertebrata, on the other hand, always have received 
considerable attention.” . 
The collections include 325 Ammonites from the Lower and Middle 
Trias, but there are no Upper Trias forms, such as the Carnian 
Nathorstites and Dawsonites, which are common enough on Bear 
Island, and which also have been recorded from Spitsbergen.? 
Triassic Nautiloidea are only represented by three examples of 
Orthoceras, one from the Lower Triassic “‘ Nodule bed”’, another 
(without label) associated with an indistinct impression of an 
Arctoceras *, and the third from a black limestone that may be of 
Middle Triassic age.* 
Two fragmentary examples of Atractites sp. ?% probably are the 
* Belemnites’’, mentioned in bed E, of Professor Gregory’s section I, 
but there was no label with these specimens, though they were 
associated with Ammonites from Trident, Sassendal. 
Thirty-one Ammonites are of Upper Jurassic (Kimmeridgian 
to Purbeckian) age, and a few fragments of Belemnites are 
referred to the same age. Finally, there are nine Cretaceous 
Ammonites, two of which can more or less definitely be dated as 
* A. Smith Woodward, ‘‘ On Two New Labyrinthodont Skulls of the genera 
Capitosaurus and Aphaneramma’’: Proc. Zool. Soc., vol. ii, 1¢04. 
* For bibliographies see e.g. C. Wiman, Bull. Geol. Inst. Univ. Upsala, 
vol. xvi, 1919, p. 85, and_E. Andersson Stensié, ib., p. 80. 
3 Wittenburg, P v., “‘ Ub. einige Trias. Fossil. v. Spitzbergen’’: Trav. 
Mus. Géol. Pierre le Grand, vol. iv, 1910, p. 38. The Upper Trias seems to be 
developed chiefly on the eastern side of Spitsbergen. It may be mentioned 
in this connexion that a collection of fossils, made this summer (1920) by 
Mr. W. J. Reynoids, and Jately presented to the British Museum, includes 
a number ot Middle Triassic Ammonites from Sassen Bay and Bell Sound, 
Spitsbergen; but both Upper and Lower Trias are unrepresented by 
Ammonites in this collection. 
4 A Grypoceras ? nordenskjéldi, Lindstrém sp., from ‘‘ West of Fortress ”’ 
near Cape Staratshin, West of Green Harbour, is in the Reynolds Collection. 
