21 
PALAEONTOLOGICAL SYNOPSIS 
Genera: 
Macrocephaliies : laterally fiexiradiate, ventrally rectiradiate; suture-line highly ornate. 
Paracephaliles: laterally fiexiradiate, ventrally rectiradiate; suture-line somewhat 
ornate. 
Metacephalites: laterally fiexiradiate, ventrally feebly fiexiradiate; ribs distinct; not 
laminate; suture-line simple, LI broad and short. 
Miccocephalites: laterally and ventrally fiexiradiate; ribs strong, laminate; suture-line 
simple, LI narrow. 
CatacephaMtes: laterally fiexiradiate, ventrally rectiradiate; suture-line somewhat 
simple. 
Species: 
Paracephalites jucundm: perplaty-, subextremipachy-gyral, subangustumbilicate; 
venter 1 ; ornament, 4 c. 
P. glabrescens: perplaty-perpachy-gyral, subangustumbilicate; venter, 1, ornament, 
4 c to 1. 
Metacephalites metastaius: perplaty-perpachy-gyral, subangustumbilicate; venter, 1; 
ornament, 4 c. 
Miccocephalites laminatus: perplaty-, perpaehy-gyral; sublatumbilieate; venter, 1; 
ornament, 4 c, laminate. 
M. miccus: perplaty-, pachy-gyral; subangustumbilicate; venter, X; ornament, 4 c, 
laminate. 
M. concinnus: perplaty-, pachy-gyral; angustumbilicate; venter, 1; ornament, 3 c, 
sublaminate. 
CatacephaMtes durus: perplaty-subextremipaehy-gyral; subangustumbilicate; venter, 
1, ornament, 4 c. 
GEOGRAPHICAL DISTRIBUTION 
The following table shows the geographical distribution of Macro- 
cephalitids which have a fairly close resemblance to the Canadian shells. 
The main bulk of Maerocephalitoid forms are excluded as their resemb- 
lance is insufficient. Possibly some further species should be included, 
but it has not been possible to obtain all the literature on the subject. 
What the table shows is that strata which may possibly be synchronous 
with the date of the Fernie formation — using the word synchronous in the 
limited sense which modern palaeontological work requires — have been 
preserved over a considerable area of the globe. It may be taken as 
axiomatic that the area of original deposition was far larger than that of 
preservation. 
Distribution of Forms Comparable 
Canada 
Arctic 
N. America 
S. America 
Europe 
Asia 
Paracephalites jucundus 
X 
x 
X 
P. glabrescens. ... 
X 
X 
Metacephalites metastatus 
X 
X 
Miccocephalites laminatus 
x 
M. miccus 
X 
X 
M. concinnus 
X 
