52 
Blairmore material contains a considerable number of the characteristic 
small cones, so that, whatever its botanical affinity, it is clearly identical 
with what has been called Athrotaxopsis grandis in the Potomac Group of 
the Atlantic Coastal Plain. 
It seems a reasonable assumption that this very abundant conifer of 
the Lower Blairmore is the one that has furnished ail of the material of 
identical appearance found at that horizon, and I have accordingly so 
identified all of the fragments as this species even where cones were lacking. 
It is common in the Patuxent and Arundel formations of the Potomac 
Group, and has been identified in the youngest or Patapsco formation- — 
the last specimens lacking the conformation of cones. Somewhat ambigu- 
ous material representing both twigs and cones, and probably correctly 
identified, is present in the Fuson formation of eastern Wyoming. It has 
not been reported from the Kootenay or the Pacific Coast Cretaceous. 
It is present at a single locality (CQ2) in Alberta, questionably referred to 
the Kootenay, and although there is not the slightest reason why it should 
not be present in the Kootenay its abundance at numerous localities in the 
Lower Blairmore suggests that this locality, whose stratigraphic position 
seemed doubtful to the collector, should be referred to the Lower Blair- 
more. 
Occurrence. Kootenay (?); locality CQ2. Lower Blairmore; localities 
CH2, CH3, CH5, CH7, CHS, CS2, CV1, DB1, and DF1 (?). 
Genus, geinitzia Endlicher 
Geiniizia sp. 
Leafy twigs that apparently represent this genus are present at two 
localities in the Lower Blairmore. They may represent the same species 
as the branch impressions in the Upper Blairmore which I have tentatively 
referred to Geinitzia jenneyi or they may represent the Upper Cretaceous 
Geinitzia formosa Heer. There* are a number of species of Sequoia which 
greatly resemble Geinitzia, and in the absence of more extensive and 
complete material it has not seemed worth while to endeavour to describe 
the present material in detail. 
Occurrence. Lower Blairmore; localities CHS and DB1. 
Genus, sphenolepis Schenk 
Sphenolepis sternbergiana (Dunker) Schenk 
Muscites sternbergiana Bunker, Mon. Norddeutsch. Wealdenbild., p. 20, 
PL 7, fig. 10 (1846). 
Sphenolepis sternbergiana Schenk, Palseont., Bd. 19, p. 243, PI. 37, figs. 3, 4; 
PI. 38, figs. 3-13 (1871). 
Berry, Lower Cretaceous, p. 435, PI. 75, figs. 1, 2 (1911). 
A full synonymy and discussion of this species will be found in the work 
by the writer cited above. It is also frequently referred to the genus 
Sphenolepidium proposed by Heer as a substitute for Sphenolepis Schenk, 
but there is no basis for changing Schenk’s proposal. The species has 
relatively slender twigs with stout, spirally arranged, keeled, acuminate, 
