A stage of embryonic development, seen in all animals except the sponges. It follows the blastula phase. The gastrula phase is marked by a dramatic restructuring called gastrulation. After gastrulation is complete, the embryo develops into a neurula[?].
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... name of Oslo, from 1624 to 1925.
The Free State of Christiania - a partially self-governing neighborhood in the city of Copenhagen.
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