Amniotic Egg (Chicken Egg)
An Amniotic Egg is simply an egg originating from an amniote. Amniotes are four-limbed animals that have an terrestrially adapted egg. These animals consist of synapsids and sauropsids (reptiles and birds). Amniotic eggs are surrounded by a tough outer shell and inside it are four sacs: chorion, amnion, allantois, and the yolk. Together they keep a safe and water-like environment for the embryo as it grows.
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