Archaeocyathan knowledge base (Cambrian)
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Groupe : Tangential section
Tangential section means a parallel section to on particular structure.
Tangential section
Liste des descripteurs
Shape of carcass perforations openings (OW/SW)
Size of carcass pores (OW/SW)
Distribution of carcass pores (OW/SW)
Repartition of carcass pores (OW/SW)
Repartition types of carcass pores (OW/SW)
Subdivision of carcass perforations openings (OW/SW)
Type of microporous sheath (OW/SW)
Type of mesh (OW/SW)
Repartition of bracts on additional sheath (OW/SW)
Shape of carcass perforations openings (IW)
Subdivision of carcass perforations openings (IW)
Porosity of carcass canals tubes zone A (IW)
Porosity of carcass canals tubes zone B (IW)
Type of microporous sheath (IW)
Repartition of bracts on additional sheath (IW)
Presence of thorny corolla
Repartition of vertical intervallar structures pores
Porosity type of vertical intervallar structures
Pores shape of vertical intervallar structures
Section shape of intervallar cells
Number of pores rows per facet (intervallar cells)
Pores shape of tabulae