90 
Fossil lot No. 
| CH2 
1 cm 
I CH4 
| CHS 
| CH6 
| CH7 
8HO ! 
| CS1 
0Q 
o 
GUI 
xva I 
| DA3 
| DBl 
| DB2 
T— *< 
bn 
Q 
Feet below top formation 
§ 
2 
T-C 
T— 1 
o 
CO 
V* 
1— 4 
o 
CO 
CD 
8 
CO 
lO 
Tf* 
o 
05 
1 1,370 1 
| 1,050 | 
N 
© 
S 
iD 
00 
tD 
o 
ao 
© 
© 
t-4 
© 
*0 
© 
C— 
Feet above base formation 
o 
o 
03 
CD 
o 
| 1,220 | 
| 1,250 | 
o 
CO 
r~ f 
1 1,360 1 
o 
OO 
Th 
OO 
© 
© 
CQ 
© 
« 
O 
I>» 
CO 
8 
QO 
8 
© 
c- 
M arekanfif.es hl.airmnrensis 
Sagennpf.p.ri.t elliptica . . 
— 
— 
— 
Sagcnopteris canadensis . . . ... 
Sagcnopteris mclearni ...» . , 
— 
— 
Sagenopteris montelli . ..................................... 
— 
Onyrhiopsis psilotoides 
— 
— 
— 
— 
• * 
finyr.hiopsis goe.ppe.rti 
— 
Cladophlebis jxxtdci 
— 
— 
— 

Cladophlcbis montanensis 
? 
? 
Cladophlebis virginiensis 
— 
— 
Cladophlebis ungeri. 
Cladophlebis distans 
— 
Coninpferis pachyphylla 
Pterophyllum aoutipennis 
— 
Dioonites buchianus abietinus 
— 
— 
— 
• • 
Stenorachis canadensis 
Nil sonia densinerve 
— 
Crinkgn are.f.ir.a 
— 
N agp.iopsis angiistifr/lia . . . 
— 
— 
. , 
, , 
Nageiopsis sp 
T orreya diekxnniana ...... 
— 
C e.phalof.axopsis magnifolia. 
A rthrofar.opsis grand is 
• ■ 
* • 
(reinitzia sp 
Sphenolepis sternbergiana. 
— 
— 
Sequoia smittiana 
— 
— 
Brachyphi/llum, sp 
Sapindopsis brevifolia , ....................... . . . . . , .... 
— 
— 
approximate. 
*By subtraction from 1,850. 
the horizon is not known, but is probably several hundred feet below the 
top. 
The table shows that the flora, as collected, ranges from about 200 
feet above the base to about 1,370 or to within about 480 feet of the top 
of the formation. There does not appear to be any pronounced zoning 
within this range: most of the flora, it is true, is within the upper part of 
this range, but this is probably so only because species are more abundant 
above 720 feet; for all species which begin below 720, save two, range to 
the highest, or nearly to the highest, level that the lower Blairmore flora 
reaches. It may be noted that one occurrence, DB1, of the angiosperm 
Sapindopsis brevifolia , is above the middle of the range of this flora. The 
horizon of the other occurrence, at DF1, is not known, but S. brevifolia 
is there associated with a typical lower Blairmore flora. 
