Fransuasaecyathus

Fransuasaecyathus ZHURAVLEVA, 1960b

Specimen-type: Fransuasaecyathus subtumulatus holotype, ZHURAVLEVA, 1960b, pl. 5, fig. 5

Systematics:
Order: CAPSULOCYATHIDA Zhuravleva, 1964
Suborder: CAPSULOCYATHINA Zhuravleva, 1964
Family: FRANSUASAECYATHIDAE Debrenne, 1964

Fransuasaecyathus Fransuasaecyathus subtumulatus ZHURAVLEVA holotype TsSGM 205/10 Atdabanian, Yudyay, Lena River, Yakutia, Russia Oblique longitudinal section (DEBRENNE, A. ZHURAVLEV & KRUSE, 2002).

Fransuasaecyathus Fransuasaecyathus subtumulatus ZHURAVLEVA holotype TsSGM 205/10 Atdabanian, Yudyay, Lena River, Yakutia, Russia Detail of wall in oblique 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) : ?
• Carcass bumps: outer wall or single wall (OW/SW) : Present
• Perforation of carcass bumps (OW/SW) : Simple
• Direction of carcass bumps perforation (OW/SW) : Downwardly opening
• 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) : Pores
• Type of carcass pores (IW) : Simple
• Relationship between rows of carcass pores and intersept (IW) : No vertical intervallar element
• Relationship between rows of carcass pores and tabulae (IW) : No tabula
• 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 : None
• Link between vertical intervallar structures : None
• Intervallar cells : None
• Tabulae : none

Others informations

• Cup shapes : Subspherical
• Shape of cup bulges : None
• Number of walls : 2
• Habitus : Solitary
• Central Cavity (or internal if one wall) : Empty
• Thorny corolla : None
• Chambers : Present
• Chambers number : 1
• Other aquiferous unit : None
• Stratigraphical extension : Atdabanian ; Botoman
• Atdabanian : 1 ; 2 ; 3 ; 4
• Botoman : 1 ; 2 ; 3
• Geographical repartition : Mongolia ; Russia
• Russia : Far East ; Siberian Platform ; Transbaikal

Systematic

• Orders : Capsulocyathida
• Suborders inside the Capsulocyathida : Capsulocyathina
• Famillies inside the Capsulocyathina : Fransuasaecyathidae

External view

• Cup shapes : Subspherical
• 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
• Size of carcass pores (OW/SW) : Uniform size
• Carcass bumps: outer wall or single wall (OW/SW) : Present
• Perforation of carcass bumps (OW/SW) : Simple
• Direction of carcass bumps perforation (OW/SW) : Downwardly opening
• 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
• 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) : ?
• Carcass bumps: outer wall or single wall (OW/SW) : Present
• Perforation of carcass bumps (OW/SW) : Simple
• Carcass external plates: outer wall or single wall (OW/SW) : None
• Carcass perforations: inner wall (IW) : Pores
• 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 : None
• 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
• 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) : Present
• Perforation of carcass bumps (OW/SW) : Simple
• Direction of carcass bumps perforation (OW/SW) : Downwardly opening
• 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) : Pores
• Relationship between rows of carcass pores and tabulae (IW) : No tabula
• 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 : None
• Link between vertical intervallar structures : None
• Intervallar cells : None
• Tabulae : none
• Chambers : Present
• Chambers number : 1
• 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
• 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) : ?
• Carcass bumps: outer wall or single wall (OW/SW) : Present
• Perforation of carcass bumps (OW/SW) : Simple
• 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) : Pores
• Relationship between rows of carcass pores and intersept (IW) : No vertical intervallar element
• Relationship between rows of carcass pores and tabulae (IW) : No tabula
• 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 : None
• Link between vertical intervallar structures : None
• Intervallar cells : None
• Tabulae : none
• Chambers : Present
• Chambers number : 1
• 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
• Type of carcass pores (IW) : Simple
• Thorny corolla : None