Annals N.Y. Acad. Sci. 
Volume XIX, Plate V. 
CHRONOLOGIC TABLE OF THE MESOZOIC FORMATIONS OF BELGIUM. 
Periods & Epochs 
(■ world-wide ) 
Cretaceous 
Stages or Formations 
Belgian series 
Origin and character 
oj the terranes 
Characteristic fossils obtained 
in the terranes 
Chief features of 
Belgian Geography 
Msestrichtian 
Senonian 
' Spiennes assise 
Nouvelles “ 
Obourg “ 
Trivieres “ 
St. Vaast “ 
Turonian 
Cenomanian 
Albian 
Wealdian 
Jurassic 
Upper ' ‘ * 
Middle Bajocian 
Lower Llassian 
Triassic 
Keuperian 
PoscUlan 
Marine ( granular limestone ; tuff)\ 
Marine ( Coarse-grained chalk) 
Marine ( Pure chalk) 
Marine ( Soft chalk) 
Marine ( Marly chalk, sand, clay) 
{ Hainault, marine ( Marly chalk) 
Limburg, fluvio-marine {Sand, 
clay, glauconite) 
Marine {marl, sand, glauconitic j 
cliallc) 
Marine {gravels, marls) 
Marine {shale, grit) 
Not represented 
Fluviatile {Sand and plastic 
clay) 
Turtles and marine saurians, fishes, 
invertebrates, plants 
Turtles and marine saurians, fishes, 
invertebrates, plants 
Fishes, invertebrates 
Fishes, invertebrates 
Turtles and marine saurians, fishes, 
marine and fresh-water invertebrates, 
plants 
>■ Fish and invertebrates 
Iguanodons, crocodiles, turtles, fishes 
and plants of Bernissart, plants of 
Bracquegnies and Beaune 
Partial marine inva¬ 
sion. 
Alternating inva¬ 
sion and retreat of 
marine waters, of 
varying extent. 
Marine invasions 
of varying extent 
in Western Bel¬ 
gium. 
All Belgium conti¬ 
nental. 
1 Belgium continen¬ 
tal and traversed 
by an important 
river. 
Not represented 
Marine ( Limestone ) j Invertebrates 
Marine {Sandstone, shale, schist, 1 ^ Marine reptiles, fishes, invertebrates 
marl, limestone) i J Marine reptiles, fishes, invertebrates 
All Belgium conti¬ 
nental. 
S.-E. extremity of 
the country under 
sea. 
Marine {Clay, marl, limestone) 
Marine ( Conglomerates , clay- 
shales) 
Invertebrates 
Invertebrates 
Marine invasion of 
the N.-E. part of 
the country. 
A. Rutot.. 
