XXVI 
ERIK A : SON STENSIO 
and cephalic spines of Selachians, Glaucolepis gyrolepidoides, Boreosomus? scaber, Birgeria 
mougeoti and a number of undeterminable remains of ganoids. 
Two fossiliferoiis horizons between the lower saurian horizon and the 
bone-bed 33 m above the fish horizon at Mt Viking. 
As far as is known, these horizons contain only Ichthyosaurians and Omphalosaurus. 
Bone-bed immediately below the lower Saurian horizon. 
Ichthyosaurians, dermal denticles of Selachians, Ceratodus sp., tooth-bearing plates 
of Coelacanthids, Glaucolepis sp., Boreosomus? scaber, Saurichthys sp. 
Lower Saurian horizon. 
Omphalosaurus, Pessopteryx nisseri, Pessopteryx arcticus, Pessopteryxpinguis, Pessopteryx 
minor, Acrodus spitzbergensis. 
Upper Saurian horizon. 
Phalarodon nordenskioldi, Pessosaurus polaris, Acrodus oppenheimeri, fragmentary bones 
of gigantic Coelacanthids, Boreosomus sp. 
Lower bone-bed in the Upper Triassic of Mt Bertil. 
(Horizon with Lingula polaris.) 
Polyacrodus pyramidalis, Birgeria sp., scales of a Boreosomus-Yike type. 
Upper bone-bed in the Upper Triassic of Mt Bertil. 
A number of undefinable bone-fragments, at least partly of Stegocephalians. 
Uncertain horizons. 
Vertebra of a Plesiosaurian and Capitosaurus polaris, both of which probably come 
from the upper Triassic; the former seems to originate from some stratum of shale 
with ironstone and the latter from a bank of sandstone. 
In this connection it may alse be of interest to have a list of the fossils in the 
bone-bed of the Horn Sound Triassic and so I give one here: 
Vertebrates of the Horn Sound Triassic. 
Hybodus sasseniensis? Acrodus spitzbergensis, Palaeobates sp., Boreosomus arcticus, 
Glaucolepis gyrolepidoides, Saurichthys sp. 
