29 
Table of Stratigraphical Distribution of Calapoecia 
on Akpatok Island 
Approximate 
heipht above 
M.S.L. in feet 
Associated fauna fonly partly 
identified) 
650 
^Beatricea undulata Bill. 
1 Uuronia septata Parka 
m 
CUmaeograptus inuifi Cox 
450 
C. canadensis var. anticostiensis 
Bill 
Ceraurinus icarus (Bill.), C. 
daedalus Cox, Ceraunis tuher- 
osus Troedason, Galymeite cf. 
meeki Foierste, Jllaenus eucen- 
trus Troedason, Shamattawac^ 
eras cf. ascoceroides Foerste 
and _ Savage, Streptelasma 
arcticum Wilson 
400 
350 , 
300 , 
Sea-level 
Calapoecia canadensis Bill 
C. canadensis Bill., 0 . canadensh 
var. ungava nov. var., C. 
canadensis var. anticostiensis 
Bill. 
C. canadensis var. ungava 
C, canadensis var. ungava 
illlaenus groenlandicus Troedason, 
I Ceraurus ep. 
[Ceraurus horridus Troedason, 
j Pterygometopus fredricki 
[ Slocom 
Westonoceras sp. 
flllaenus groenlandicus Troedsson, 
Ceraurinus icarus Bill., Strep- 
telasma robustum Whiteaves, 
8. arcticum Wilson 
STRATIGRAPHICAL AND GEOGRAPHICAL RANGE 
Calapoecia is typical of strata of Richmond age. Ulrich (1911, 306) 
has written: “This late Richmond horizon. .. .is characterized by an 
association of corals, bryozoa, and brachiopods that may be recognized 
immediately. Because of the presence of the genera Haly sites, Heliolites, 
Calapoecia, and Favosites it has frequently been identified wdth Niagran.” 
But there are records of Calapoecia from beds of ages other than this. 
Since the correlation of such beds is hitherto disputed, the question is 
reviewed in some detail. 
OCCURRENCES IN STRATA OF POST BLACK RIVER OR LATER AGE 
Wyoming. In the Bighorn limestone with a Richmond assemblage of 
corals (Ulrich in Darton 1906) ; Calapoecia resembling huronensis and 
anticostiensis (probably var. ungava nov.) and Calapoecia sp. indet. 
(Darton 1906, 548-50) (See Miller, 1930). 
Kentucky. “Hudson River Group,” Nelson county {‘^Columnopora 
rayi^^ and “ C. cribriformis” Davis 1887); lower part of Liberty bed, 
Henry county and Marion county, Richmond (“ C. cribriformis ”) Foerste 
1909; Waynesville of Elkhorn (Hussey, 1926, 148). 
11476—3 
