Descripteur : Shape of cup bulges

Type du descripteur : categorical

Bulges: External protuberances of the cup.

Cup: Calcareous archaeocyathan skeleton.

../images/002shape_of_cup_bulge.png

Shape of cup bulges

../images/Lorbicyathus_mogolicusI.png

Shape of cup bulges

Longitudinally plicate (outer wall)

Plicate wall: Each intersept is individually folded formed sharp mid-interseptal longitudinal ridge.

Outer wall: External part of the skeleton, composed by a porous carcass, simple or coated by an additional sheath.

Intersept: Part of a wall or intervallum between two adjacent radial vertical structures (septa, taeniae)

../images/crucicyathus_repandus5I.png

Longitudinally plicate (outer wall)

../images/dupliporocyathus_tumulosus1I.png

Longitudinally plicate (outer wall)

../images/plisse_longitudinalementI.png

Longitudinally plicate (outer wall)

Longitudinally plicate (inner wall)

Plicate wall: Each intersept is individually folded formed sharp mid-interseptal longitudinal ridge.

Inner wall: Internal part of the skeleton, separating central cavity and skeletal structures, composed by a porous carcass, simple or coated by an additional sheath.

Intersept: Part of a wall or intervallum between two adjacent radial vertical structures (septa, taeniae)

Central cavity: Inner space delimited by the inner wall of two-walled cup. In one-walled cup = inner cavity.

../images/asterocyathus_salairicusI.png

Longitudinally plicate (inner wall)

Outer wall shows folds

Fold: Succession of more or less regular annulations of cup.

Outer wall: External part of the skeleton, composed by a porous carcass, simple or coated by a additional sheath.

../images/ONDULATIONS_MEI.png

Outer wall shows folds

../images/pycnoidocoscinus_0013I.png

Outer wall shows folds

../images/pycnoidocoscinus_pycnoideumI.png

Outer wall shows folds

../images/pilodicoscinus_yuaniI.png

Outer wall shows folds

Inner Wall shows folds

Fold: Succession of more or less regular annulations of cup.

Inner wall: Internal part of the skeleton, separating central cavity and skeletal structures, composed by a porous carcass, simple or coated by an additional sheath.

Central cavity: Inner space delimited by the inner wall of two-walled cup. In one-walled cup = inner cavity.

../images/mi_onduleeI.png

Inner Wall shows folds

Both walls show folds

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

../images/orbiasterocyathus_geriI.png

Both walls show folds

../images/incurvocyathus_voronovae3I.png

Both walls show folds

../images/orbicyathus_mongolicus2I.png

Both walls show folds

None

Hiérarchie

Shape of cup bulges
    |
    |_ General shape of folds affecting both walls {Longitudinally plicate (outer wall) , Longitudinally plicate (inner wall) , Outer wall shows folds , Inner Wall shows folds , None}

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