5 
There are two groups of rocks in Tasmania in 
which these interesting fossils have been found. 
One, at Zeehan, is of Silurian age. The other is 
of Lower Ordovician age and is the more important. 
Until last Christmas the latter series was only 
known as a bed a few inches thick at Caroline Creek 
near Latrobe and some scattered boulders at Tim Shea 
9 miles North of Kallista* Now we have found some 
beds on the railway at Kallista. 
No complete trilobite has ever been found in 
Tasmania, but it is hoped that the Kallista beds 
will yield one. This absence has thrown doubt on 
the proper classification of the Tasmanian forms. 
Apart from their enormous interest biologically these 
fossils form our most useful means for zoning our ore 
bearing rocks. They are of international interest 
in linking up ancient land masses and oceans, and no 
fossil creates a wider interest or is as intensely 
studiedj The finding of one complete trilobite at 
Kallista would be an event of the greatest importance 
in geological circles. 
Tasmanian Trilobite . 
Can you find a complete specimen? 
Shielcl • 
