Orly Vila Ocean domain age (Ordovician period) 488-443 million years. As the era of sea organisms have developed and spread more. Start the found animal spine for the first time, there is a small fish, my jaw. Found a fossil in a rock group, thung song in an ancient sea, Satun, such as squid (Nautiloid) Sai Lo byte (Crinoid) sea snails, sponges Crinum asiaticum, sea shell lamp (Brachiopod), to brag and found algae growth highlights (Stromatolite) rama histogram a lot is considered to be living in this era.
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