~26-
no keels. Three styles of ornament are present: (1) flat \ribs! with
tubercles: (2) broad flat tribs! with striae or fine costae; and (3) fine
narrow 'ribs!. (The 'ribs! indicate the flat svaces Hetweon the radial
furrows). Asklepioceras laurence has the second style of ornament sane out
the innermost whorls are not preserved. A. glaciense and A. delicatum n. sp.
have the firgt ornament only. A. mahaffiin. sp., has the second al
succeeded by the third. The early Karnian species A. helenae Renz from Argolis
has the first style of ornament, succeeded vy the second; thus A. glaciense
and A. delicatum have surface ornament gintler’ to that of the inner whorls
of A. helenae, and A. laurenci has surface Se ere similar to that of the
outer whorls of A. helenae. The early Karnian A. seementatum iojetsovice
apvears to have the second style of ornament only, the cane costas or striae
on the flat ‘ribs! a ooine clearly in Mojsisovics intra rionae but the
deeo furrows aré-more evenly “spaced than in 4. laurenci. The Tiadinien i
A. redlichi Kittl from Dobrudscha also apoears to have the second Rares
only, but has more evenly spaced furrows and ig more comoressed than A.
laurenci. The late Ladinian A. loczyi Bienes from Bakony may have ve
second ornament only, but merely the core, not the anne ae tes peat is
preserved; the furrows are closer and more aes Boece’ seein in A. ;
laurenci. The early Karnian A. $ quamma tum [vesiioreiseers from Bithynde may have
the second ornament only, with the furrows at first Hake spaced ioe ee |

later stages of ‘growth more narrowly spaced.

- REFERENCES -

Arthaber, G. von.! Die Trias von Bithynien (Anatolien); Bees! Pal.
Geol. Osterr.-Ungarns, Band XXVII, pvp. Bee plates (1915).

Beach, H.H., and Spivak, J.: Dunlevy-Portage Mowatatn Map-area, 8ritish
Columbia; Geol. Surv., Canada, Paper 44-19 (igh).

Boehm, J.t Ueber Die Oberstriadische Fauna der Bareninsel; Kungl. Svenska
Vetenskaps-Askad. Handl., Bandet 37, No. 3 (1903).

Frebold, Hans: Geologie von Boieevereene der Bareninsel, des Konig Karl—~
und Franz—Joseoh-Landes; Geologie der Erde; Berlin (1935).

Hage, C-O+.: Geol. Adjacent to the Alaska Hi shv-ay betveen Fort St. John
and Fort Nelson, British Columbia; Geol. Surv., Canada, pees yy.

30 (1944).

Kindta. | B.D... eh euvioetuereat Reconnaissance along Fort Nelson,. Liard-and Beaver
Rivers, Northéastern British Columbia and Southeastern Yukon: So
Surv., Canada, Paper W116 (1944), !

Martin, G.C.:; The Mesozoic Stratisra chy | of Alaska; U.S. Geol. Surv.,
‘Bull. 176: (1926).