Type of folds affecting both walls - From a traditional terminology to an adapted one

Descriptor : Type of folds affecting both walls

Descriptor type : categorical

Fold: Succession of more or less regular annulations of both walls.

Longitudinal folds (stellate transverse section): Longitudinal fold: Succession of more or less regular transverse annulations of cup.

Regular: Folds are periodic and synchronous.
Transverse folds: Transverse fold: Succession of more or less regular longitudinal annulations of cup.

Regular: Folds are periodic and synchronous.
Irregular folds: Irregular: Folds aren't periodic and synchronous. They can be transverse and/or longitudinal.

Transverse fold: Succession of more or less regular longitudinal annulations of cup.

Longitudinal fold: Succession of more or less regular transverse annulations of cup.
isn't included in the term

Hierarchy

Shape of cup bulges
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 |_ Type of folds affecting both walls
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    |_ Shape of folds affecting both walls {Longitudinal folds (stellate transverse section) , Irregular folds , isn't included in the term}