According to the surroundings of the organisms, whether they existed on land, in rivers, lakes, estuaries, or the sea, they are spoken of as belonging to terrestrial, fluviatile, lacustrine, estuarine, or marine deposits.
Fig. 1—Fossil Shells Embedded in Sandy Clay.
About 3/4 nat. size. Of Cainozoic or Tertiary Age (Kalimnan Series).
Grange Burn, near Hamilton, Victoria.
(F.C. Coll.)
Fig. 2—Tracks probably of Crustaceans (Phyllocarids).
About 3/4 nat. size. Impression of a Slab of Upper Ordovician Shale. Diggers’ Rest, Victoria.
(F.C. Coll.)