The formation of somites in Xenopus.
D000818:Animals; D001001:Anura; D002465:Cell Movement; D004625:Embryo, Nonmammalian / Q000166:cytology; D005314:Embryonic and Fetal Development; D006238:Haploidy; D008433:Mathematics; D008648:Mesoderm / Q000166:cytology; D012399:Rotation; D014714:Vertebrates / Q000196:embryology