22 
MUSEUM BULLETIN NO. 3. 
distribution lead to the assignment of the upper zones to the 
Lower Llandovery and hence that which lies before has been 
similarly placed, although it is possible that the Becsie River 
may have no representation in the British section. 
The greater portion of the Jupiter River formation is Upper 
Llandovery, in which no less than thirty-nine identical or closely 
related species of Jupiter River forms occur — nearly thirty per 
cent of the Jupiter River fauna. The vertical distribution of many 
of the species sustains the correlation . T ripleciu insularis holds to 
the Upper Llandovery, and its Anticosti variety appears for the 
last time in zone 3 of the Jupiter River formation. Pentamerus 
oblongus is rare in the Gun River, but very abundant in the Jupiter 
River. In England it is rare in the Lower Llandovery, but abun- 
dant in the Upper Llandovery. Many other species show the 
same distribution. 
The English Wenlock carries a large coral fauna and in this 
respect is like the Chicotte, but in the writer’s judgment this re- 
semblance has no correlative value, as the Anticosti section 
teaches that a coral reef formation may recur again and again 
and locally lie at many different horizons. The English Wen- 
lock, however, has forty-nine species which have representation in 
identical or closely related forms in the Upper Jupiter River and 
Chicotte formations and these facts make it extremely probable 
that these Anticosti strata have a time equivalence with the 
Wenlock. 
In the Kristiana region, the Silurian (Lower Llandovery to 
Wenlock) of the Ringerike section, there is a facies somewhat 
similar to that of Anticosti, and has thirty-seven species which are 
represented by identical or closely related forms in the Anticosti 
Silurian. The Lower Llandovery, Kiaer’s etage 6, correlates 
fairly well with the Gun River and the upper portion of the 
Becsie River; while etage 7 or the Upper Llandovery, exhibits 
a close parallelism with the Jupiter River, and etage 8, or the 
Wenlock, shows close faunal equivalence with the upper Jupiter 
River and the Chicotte formations. 
