Inessocyathus

Inessocyathus DEBRENNE, 1964

Specimen-type: Archaeocyathus spatiosus lectotype, BORNEMANN, 1886, pl. 15, fig.1a

Systematics:
Order: AJACICYATHIDA R. Bedford& J. Bedford, 1939
Suborder: AJACICYATHINA R. Bedford& J. Bedford, 1939
Superfamily: BRONCHOCYATHOIDEA R. Bedford& J. Bedford, 1936
Family: ETHMOCYATHIDAE Debrenne, 1969

Inessocyathus Inessocyathus spatiosus (BORNEMANN) lectotype Botoman, San Pietro, Sardinia, Italy Transverse section (BORNEMANN, 1886)

Inessocyathus Inessocyathus spatiosus (BORNEMANN) topotype MNHN M84074 specimen SPi-13 Botoman, San Pietro, Sardinia, Italy Longitudinal section (DEBRENNE, A. ZHURAVLEV & KRUSE, 2002).

Outer wall

• Structure of outer carcass wall (OW/SW) : Carcass wall well defined
• Carcass perforations: outer wall or single wall (OW/SW) : Pores
• Type of carcass pores (OW/SW) : Simple
• Size of carcass pores (OW/SW) : Uniform size
• Repartition of carcass pores (OW/SW) : Regular repartition
• Repartition types of carcass pores (OW/SW) : Straight rows of pores
• Relationship between rows of carcass pores and intersept (OW/SW) : more than 2
• Carcass bumps: outer wall or single wall (OW/SW) : None
• Carcass external plates: outer wall or single wall (OW/SW) : None
• Stipules : None
• Type of morphological tubes (OW/SW) : None
• Additional sheath : None

Inner wall

• Structure of inner carcass wall (IW) : Carcass wall well defined
• Stipules : None
• Carcass perforations: inner wall (IW) : Canals
• Constitution of carcass canal system (IW) : 1 zone
• Shape of carcass canals zone A (IW) : Straight
• Porosity of carcass canals zone A (IW) : Non-porous
• Relationship between carcass canals zone A and intersept (IW) : 1 row of canals per intersept
• Direction of carcass canals zone A (IW) : Upwardly opening ; Horizontal opening
  (horizontal to upwardly opening)
• Building of carcass perforations (IW) : Without participation of vertical structures
• Carcass external plates: inner carcass wall (IW) : None (external plates and/or inner wall)
• Type of morphological tubes (IW) : None
• Additional sheath : None

Intervallum

• Vertical intervallar structures : Present
• Type of vertical intervallar structures : Septa
• Repartition of vertical intervallar structures pores : Completely porous
• Porosity of vertical intervallar structures : ?
• Pores of vertical intervallar structures : Circular pores
• Link between vertical intervallar structures : None
• Intervallar cells : None
• Tabulae : none

Others informations

• Cup shapes : Cylindrical-conical
• Shape of cup bulges : None
• Number of walls : 2
• Habitus : Solitary ; Modular
• Type of modularity : Branching by longitudinal subdivisions ; Catenulate
• Central Cavity (or internal if one wall) : Empty
• Thorny corolla : None
• Chambers : None
• Other aquiferous unit : None
• Stratigraphical extension : Atdabanian ; Botoman
• Atdabanian : 1 ; 2 ; 3 ; 4
• Botoman : 1 ; 2 ; 3
• Geographical repartition : Australia ; China ; Europe ; Mongolia ; Morocco ; Russia
  (China: South China.)
• Europe : France ; Germany ; Iberia ; Italia: Sardinia
• Russia : Altay Sayan ; Far East ; Siberian Platform ; Tuva

Systematic

• Orders : Ajacicyathida
• Suborders inside the Ajacicyathida : Ajacicyathina
• Superfamillies inside the Ajacicyathina : Bronchocyathoidea
• Famillies inside the Ajacicyathina : Ethmocyathidae

External view

• Cup shapes : Cylindrical-conical
• Shape of cup bulges : None
• Structure of outer carcass wall (OW/SW) : Carcass wall well defined
• Structure of inner carcass wall (IW) : Carcass wall well defined
• Habitus : Solitary ; Modular
• Type of modularity : Branching by longitudinal subdivisions ; Catenulate
• Size of carcass pores (OW/SW) : Uniform size
• Carcass bumps: outer wall or single wall (OW/SW) : None
• Carcass external plates: outer wall or single wall (OW/SW) : None
• Carcass external plates: inner carcass wall (IW) : None (external plates and/or inner wall)
• Additional sheath : None
• Thorny corolla : None

Transverse section

• Shape of cup bulges : None
• Number of walls : 2
• Structure of outer carcass wall (OW/SW) : Carcass wall well defined
• Structure of inner carcass wall (IW) : Carcass wall well defined
• Habitus : Solitary ; Modular
• Central Cavity (or internal if one wall) : Empty
• Carcass perforations: outer wall or single wall (OW/SW) : Pores
• Relationship between rows of carcass pores and intersept (OW/SW) : more than 2
• Carcass bumps: outer wall or single wall (OW/SW) : None
• Carcass external plates: outer wall or single wall (OW/SW) : None
• Carcass perforations: inner wall (IW) : Canals
• Relationship between carcass canals zone A and intersept (IW) : 1 row of canals per intersept
• Building of carcass perforations (IW) : Without participation of vertical structures
• Carcass external plates: inner carcass wall (IW) : None (external plates and/or inner wall)
• Additional sheath : None
• Thorny corolla : None
• Vertical intervallar structures : Present
• Type of vertical intervallar structures : Septa
• Repartition of vertical intervallar structures pores : Completely porous
• Link between vertical intervallar structures : None
• Intervallar cells : None
• Tabulae : none
• Other aquiferous unit : None

Longitudinal section

• Shape of cup bulges : None
• Number of walls : 2
• Structure of outer carcass wall (OW/SW) : Carcass wall well defined
• Structure of inner carcass wall (IW) : Carcass wall well defined
• Habitus : Solitary ; Modular
• Type of modularity : Branching by longitudinal subdivisions ; Catenulate
• Central Cavity (or internal if one wall) : Empty
• Carcass perforations: outer wall or single wall (OW/SW) : Pores
• Carcass bumps: outer wall or single wall (OW/SW) : None
• Carcass external plates: outer wall or single wall (OW/SW) : None
• Stipules : None
• Type of morphological tubes (OW/SW) : None
• Carcass perforations: inner wall (IW) : Canals
• Constitution of carcass canal system (IW) : 1 zone
• Shape of carcass canals zone A (IW) : Straight
• Porosity of carcass canals zone A (IW) : Non-porous
• Direction of carcass canals zone A (IW) : Upwardly opening ; Horizontal opening
  (horizontal to upwardly opening)
• Carcass external plates: inner carcass wall (IW) : None (external plates and/or inner wall)
• Type of morphological tubes (IW) : None
• Additional sheath : None
• Thorny corolla : None
• Vertical intervallar structures : Present
• Type of vertical intervallar structures : Septa
• Repartition of vertical intervallar structures pores : Completely porous
• Porosity of vertical intervallar structures : ?
• Pores of vertical intervallar structures : Circular pores
• Link between vertical intervallar structures : None
• Intervallar cells : None
• Tabulae : none
• Chambers : None
• Other aquiferous unit : None

Oblique section

• Shape of cup bulges : None
• Number of walls : 2
• Structure of outer carcass wall (OW/SW) : Carcass wall well defined
• Structure of inner carcass wall (IW) : Carcass wall well defined
• Habitus : Solitary ; Modular
• Central Cavity (or internal if one wall) : Empty
• Carcass perforations: outer wall or single wall (OW/SW) : Pores
• Size of carcass pores (OW/SW) : Uniform size
• Relationship between rows of carcass pores and intersept (OW/SW) : more than 2
• Carcass bumps: outer wall or single wall (OW/SW) : None
• Carcass external plates: outer wall or single wall (OW/SW) : None
• Stipules : None
• Type of morphological tubes (OW/SW) : None
• Carcass perforations: inner wall (IW) : Canals
• Constitution of carcass canal system (IW) : 1 zone
• Shape of carcass canals zone A (IW) : Straight
• Porosity of carcass canals zone A (IW) : Non-porous
• Relationship between carcass canals zone A and intersept (IW) : 1 row of canals per intersept
• Direction of carcass canals zone A (IW) : Upwardly opening ; Horizontal opening
  (horizontal to upwardly opening)
• Building of carcass perforations (IW) : Without participation of vertical structures
• Carcass external plates: inner carcass wall (IW) : None (external plates and/or inner wall)
• Type of morphological tubes (IW) : None
• Additional sheath : None
• Thorny corolla : None
• Vertical intervallar structures : Present
• Type of vertical intervallar structures : Septa
• Repartition of vertical intervallar structures pores : Completely porous
• Porosity of vertical intervallar structures : ?
• Pores of vertical intervallar structures : Circular pores
• Link between vertical intervallar structures : None
• Intervallar cells : None
• Tabulae : none
• Chambers : None
• Other aquiferous unit : None

Tangential section

• Type of carcass pores (OW/SW) : Simple
• Size of carcass pores (OW/SW) : Uniform size
• Repartition of carcass pores (OW/SW) : Regular repartition
• Repartition types of carcass pores (OW/SW) : Straight rows of pores
• Thorny corolla : None
• Repartition of vertical intervallar structures pores : Completely porous
• Porosity of vertical intervallar structures : ?
• Pores of vertical intervallar structures : Circular pores