Cloacal fold | definition of cloacal fold by Medical dictionary
a slight elevation located just lateral to the cloacal membrane early in the fifth week of embryonic development. Cloacal folds later divide into urogenital folds and anal folds.
References in periodicals archive
6 times the interorbital distance; (7) first finger equal or slightly longer than second; (8) disc on third finger more than 3/5 size of tympanum; (9) keels on fingers absent; (10) third finger not swollen in male; (11) short thick cloacal fold
, with entire free border; (12) tarsal fold distinct, raised, not ending in tubercle; (13) inner metatarsal tubercle oval, about 2.
6 times wider than adjacent phalanx; (7) fingers with thick lateral fringes; thickened edge along outer edge of fourth finger, from base of pad to close to outer metacarpal tubercle; (8) cloacal fold
short; (9) tarsal fold strong, not ending in tubercle but having a little distal enlargement; (10) foot-web formula: I2.
At 25 days however, was possible to observe cloacal folds
and a cloacal membrane (Fig.