Helicotoma sp.
Llandeilian age
Early Ordovician (488-471 million years)
Kaki Bukit Limestone Formation, Pulau Langgun,
Langkawi, Kedah
Llandeilian age
Early Ordovician (488-471 million years)
Kaki Bukit Limestone Formation, Pulau Langgun,
Langkawi, Kedah
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