Vietnam or Thailand ? Vote for the TOP Country of the Week !
The lowest rock with organic remains yet discovered is "the Ungulite or Obolus grit" of St. Petersburg, probably coeval with the Llandeilo flags of Wales. Shells of the lowest known Fossiliferous Beds in Russia. Siphonotreta unguiculata, Eichwald. From the Lowest Silurian Sandstone, "Obolus grits," of St. Petersburg. a. Outside of perforated valve. b.
Word Of The Day