Periphragm

Theca

Theca

Cyst process

Trifid process

Trifid process

Precingular archaeopyle

Spherical central body

Apical archaeopyle

Spherical central body

(f) Cavate

Periphragm-Endophrag

Pericoel

(f) Cavate

Inner body (endophragm)

Sulcus

Apical horn

Inner body (endophragm)

Sulcus

Intercalary archaeophyle

Clngulum

Intercalary archaeophyle

Clngulum

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