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Embryology of chicken; 24 hours after fertilization
Legend:
1 area opaca
2 area pelucida
3 neural fold
4 head fold
5 fore gut
6 neural groove
7 somite
8 notochord
9 unsegmented mesoderm
10 Hensen's Node
11 primitive streak
English name: Common chicken
Scientific name: Gallus domesticus
Familia: Phasianidae/Meleagridae
Classis: Aves
Phylum: Chordata (subphylum vertebrata)
Regnum: Animalia
