Jurassic Fossil Oyster (Rastellum) - Madagascar

This is a Jurassic aged fossil oyster of the species Rastellum carinatum from Tulear Province, Madagascar. It has wide, angled ribs that have led to it being called the 'denture clam'. The zig-zag join between the two shells stopped coarse dirt and debris entering the shell and damaging its soft body. Like modern oysters it lived in shallow coastal waters including the intertidal zone (the area between high and low tide) and fed on food particles that it filtered out of the sea water.
FOR SALE
$10
DETAILS
SPECIES
Rastellum carinatum
LOCATION
Tulear Province, Madagascar
SIZE
3.8" long
SUB CATEGORY
ITEM
#54430
GUARANTEE
We guarantee the authenticity of all of our
specimens. Read more about our
Authenticity Guarantee.