ahs

a late Karnian age, but the «assignment of Nathorstites alaskanus Smith ._,.

to the genus Nathorstites is open to yuestibn.

Spitabergen

Nathorstites-bearing strata ere present in the ans San eastern parts
of West Spitzbergen Island and on Barents and Bago Islanis. They are under—
lain by the Daonella beds, and overtain by the Rhastiolplebe heasinowpeas
The Daonella beds have heen dated: Tadinten™ Dy Stolley (1911), and Spath (1921)
has tentatively placed the 'Oozy Mound! beds with Daonella in the Ladinian--
Frebdold (1935) lists svecies of Daonella, Gymotoceras, and Pnwapopanoceras
from the Danelle pede indicating an Anisian age.. The ammonites are said
to be mostly in the ae fee and in a table Frébold:notes that. perhavs the
uprermost vart of eae pede is of Ladinian age. The evidence of relative
stratieraohic eoanenen Br the Wamnorctites faunas: to other faun:.s whose age
is known ae not, Cherefore: satisrectocy: for the age of the immediately
underlying beds is avparently Leemee unknown and unless ‘the Nathorstites
beds are of ate Neclen eamed which is improbable, -a. hiatus of .congiderable
magnitude exists ne twaen nen and the over-lying plant-bearing beds.

Nathorstites econneitt var. Lentigularig Whitedves.igs common to the
Jathorstites faunas of Spitzbereen and northe: stern British Columoia,.
Halobia eee i the gotener ec fauna, but absent from the fauna in

northeastern British Columbia.

Bear island

Bear Island is a small island in the Baan esl, agli od Gale beruea,
On its east coast, grey sandstone and dark shale with clay-dronstone
concretions carry the Nathorstites fauna. They Roe eee rcs oy barren
sandstone, and the overlying beds have been removed by erosion, the
Nathorstites—bearing beds being the youngest exposed on the island. Evidently
the relative stratizraphic position affords no evidence of age,

The presence in the Bear Island fauns (See Boéhm, 1903) of Nathorstites

meconnelli var. lenticularis Whiteaves and Dawsonites canadensis Whiteaves

suggests a correlation with the Nathorstites fauna of northeastern British

Columbia. Halobia and Trachycoras revorted in this fauna, however, are