seen from Brazil
seen from United States
seen from India
seen from Netherlands
seen from Singapore
seen from Singapore
seen from Malaysia
seen from United States
seen from China
seen from Singapore
seen from France
seen from Malaysia
seen from France
seen from Malaysia
seen from United Kingdom
seen from Malaysia
seen from Netherlands
seen from Malaysia
seen from France
seen from China
Late Ordovician, Laurentian warm water reef
From top left: archaeocrinus, diestoceras(Oncocerid), isorthoceras, armenoceras
Middle left: tcherskidium and proconchidium brachiopod
From bottom left: aulacerid 2 meter tall sponges, Deloprosopus, phacelloid corals
Top right: uncolored sketch of stromatoporoid and aulacerid sponge reef
