Altaicyathus

Altaicyathus VOLOGDIN, 1932

Specimen-type: Altaicyathus notabilis lectotype, VOLOGDIN, 1932, pl. 1, fig. 5

Systematics:
Order: KAZACHSTANICYATHIDA Konyushkov, 1967
Suborder: ALTAICYATHINA Debrenne, 1991
Family:TABULACYATHIDAE Vologdin, 1956

Altaicyathus Altaicyathus notabilis VOLOGDIN lectotype TsNIGRm 290/2957 Botoman, Lebed’ River, Altay Sayan, Russia Longitudinal section (VOLOGDIN, 1932)

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) : 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) : 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) : ?
• 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 : Pillars
• Repartition of pillars : Present in initial and subsequent chambers
• Intervallar cells : None
• Tabulae : Present
• Building of tabulae : Extensions of both walls
• Porosity of tabulae : Simple pores

Others informations

• Cup shapes : Cylindrical-conical
• Shape of cup bulges : None
• Number of walls : 2
• Habitus : Solitary ; Modular
• Type of modularity : Massive pseudocolony
• Central Cavity (or internal if one wall) : Empty
• Thorny corolla : None
• Chambers : Present
• Chambers number : Several
• Chambers stack : Regular stack
• Other aquiferous unit : Astrorhiza ; Chimneys ; None
  (chimneys and astrorhizae may be present)
• Stratigraphical extension : Botoman
• Botoman : 1 ; 2
• Geographical repartition : Europe ; Mongolia ; Russia ; USA
• Europe : Italia: Sardinia
• Russia : Altay Sayan ; Far East

Systematic

• Orders : Kazachstanicyathida
• Suborders inside the Kazachstanicyathida : Altaicyathina
• Famillies inside the Kazachstanicyathida : Tabulacyathidae

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 : Massive pseudocolony
• 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) : ?
• 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) : 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 : Pillars
• Repartition of pillars : Present in initial and subsequent chambers
• Intervallar cells : None
• Tabulae : Present
• Porosity of tabulae : Simple pores
• Other aquiferous unit : Astrorhiza ; Chimneys ; None
  (chimneys and astrorhizae may be present)

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 : Massive pseudocolony
• 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) : Pores
• Relationship between rows of carcass pores and tabulae (IW) : ?
• 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 : Pillars
• Repartition of pillars : Present in initial and subsequent chambers
• Intervallar cells : None
• Tabulae : Present
• Building of tabulae : Extensions of both walls
• Chambers : Present
• Chambers number : Several
• Chambers stack : Regular stack
• Other aquiferous unit : Astrorhiza ; Chimneys ; None
  (chimneys and astrorhizae may be present)

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) : ?
• 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) : Pores
• Relationship between rows of carcass pores and intersept (IW) : No vertical intervallar element
• Relationship between rows of carcass pores and tabulae (IW) : ?
• 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 : Pillars
• Repartition of pillars : Present in initial and subsequent chambers
• Intervallar cells : None
• Tabulae : Present
• Building of tabulae : Extensions of both walls
• Porosity of tabulae : Simple pores
• Chambers : Present
• Chambers number : Several
• Chambers stack : Regular stack
• Other aquiferous unit : Astrorhiza ; Chimneys ; None
  (chimneys and astrorhizae may be present)

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
• Porosity of tabulae : Simple pores