CORRELATION OF STRATA. CXXV 
Table showing number of species found in each of the beds, groups and periods of the 
Lower Silurian in Minnesota, number of same received from below and passing up, 
and number restricted to each.—Continued. 
Hudson River 
Trenton period. or Oincin- 
nari period. 
Stones River group. | Black River group. Trenton group. 
Utica | Rich- 
Lower| V2nux|Sticto-| Rhini-|Cteno-|Phyllo|Olitam| Fusis-| Mac- | group. ions 
Buff. emia |porella] dictya| donta |porina}bonit’s| pira | lurea : 
bed. | bed. ed. | bed. | bed. | bed. bed. | bed. 
4| Number of species............ 6 31 2 1 10 4 4 13 1 
S| Received from below and pass- 
as dS THAR OSs Goeweeed po watoerbodes 2/6) 6/10) 2/1} 1]1)5|4) 3/2] 212) 6|1)]0/0 
rs a} Number of species restricted 
Serato ned an sec ede Oh aarerlaeo | Onn leas | aca 
ic} 
g- a ae ee a 
a ey Number of species............ 31 12 16 1 2 
io) 53] Received from below and pass- 
SPIN ep sipenicoe aerosols roe P19 6/3 6] 1 dao 
&] Number of species restricted 
Sil) i@) SOW Nsisobos>oon doconsecoe 22 6 9 0 | 1 
| Number of species............ 6 11 16 26 4 15 8 9 0 | 
S| Received from below and pass- 
45) RNTUYSEN Sag Be godcatoocee Saeenere 216 | 4]1010/4)4|/513/[3!3]0)1]2!2/0!10]0 
« g}| Number of species restricted 
S| 0) [DGC cccacosccsd oodecden 0 0 3 18 if 12 5 7 0 
3 =| 
D cA Number of species............ 19 39 15 4 4 
e) 5] Received from below and pass- 
ONIN Cap rarer rae «rears sass Sheveie ; ?|4 4|3 2/0 1/0]0|0 
&t] Number of species restricted 
eS BEE ORe TO Upstarts. cee seca cos: 15 32 13 3 4 
| Number of species............ 12 13 7 5 2 2 10 17 0 
bod Received from below and pass- 
Peal rel CPU lapsisteisten orc cries wens oe ae 1/10) 9/9) 7/3 75[4)2/2)2]/2)/3/6| 713) 0]0 
<3 a| Number of species restricted 
as "||" (00) WGIS, gadndabsoceoGoesuded 2 1 0 0 0 0 4 8 0 
ic esd 
a 2B Number of species............ | 16 : 5 Pal 3 5 
5| Received from below and pass- 
|| eaNyveN ih Ose meas gaan cb cane amore | ?|6 5|4 513 3/2]2/0 
ot! Number of species restricted 
Ell troeisigosesesesceasnoudee | 10 0 13 0 3 
-: | Number of species............ 3 5 5 9 4 7 4 ¢) 0 
2 ¥| Received from below and pass- 
a) ly ciN0y ee 0 remo acc ceTar eee 213 (3/4) 4/1]1]5)/4]/2! 3/2) 2/1)/1)]0)] 0]0 
« a|Number of species restricted 
aera TOMDEU Stirs tc osisce vmaeenothe 0 0 1 4 0 4 2 8 0 
E eed 
e 2B Number of species............ 6 13 12 0 6 
S 5] Received from below and pass- 
SE INSP seca sodoogsue spec 2 || it] 2 2/0 0|0]0|0 
f= “| Number of species restricted 
SM EGON SLOUPS* se scic waste ce mee pene 5 11 10 | 0 6 
= 84 Number of species. ..... | 66 7 | 96 152 123 | 113 SR | ARP) 26 
3 Go | Rec’d from below and aPSSIAE ‘TDs. ? | 51 43 ie 80)50 | 42148 | 72/73 | 36/39 | 37}42 | 60/78 | 26/12 | 0 
Ea” No. of species restricted to beds .. 21 54 40 55 128 a 
Number of species . Bos | 246 
Ree’d from below and passing Tb. 
No. of species restricted to groups. 
Totals 
for 
groups 
a) 
oO 
bo 
- 
i) 
or 
Go 
Rec'd from below pan Peenite D.. 
No. of species restricted to meriode! 
Totals 
for 
periods. 
Number of species... at a | 696 | 113 
