Robertiolynthus

Robertiolynthus A. ZHURAVLEV in VORONOVA& others, 1987

Specimen-type: Robertiolynthus handfieldi holotype, VORONOVA& others,1987, pl. 1, fig. 1

Systematics:
Order:: MONOCYATHIDA Okulitch, 1935
Family: FAVILYNTHIDAE Debrenne, 1989

Robertiolynthus Robertiolynthus handfieldi ZHURAVLEV holotype GSC 90116 Botoman, Mackenzie Mountains, Canada Longitudinal section (VORONOVA & others, 1987)

Robertiolynthus Robertiolynthus handfieldi ZHURAVLEV paratype GSC 90117 Botoman, Mackenzie Mountains, Canada Transverse section (VORONOVA & others, 1987)

Outer wall

• Structure of outer carcass wall (OW/SW) : Carcass wall well defined
• Carcass perforations: outer wall or single wall (OW/SW) : Canals
• Shape of carcass canals (OW/SW) : Straight
• Direction of carcass canals (OW/SW) : Upwardly opening ; Horizontal opening
  (horizontal to upwardly opening)
• Origin of carcass canals (OW/SW) : Limited to the carcass
• Relationship between carcass canals and intersept (OW/SW) : No intervallar vertical elements
• Carcass bumps: outer wall or single wall (OW/SW) : None
• Carcass external plates: outer wall or single wall (OW/SW) : Present
• Type of carcass external plates (OW/SW) : Bracts
• Shape of carcass external plates (OW/SW) : ?
• Direction of carcass external plates (OW/SW) : ?
• Stipules : ?
• Type of morphological tubes (OW/SW) : ?
• Additional sheath : None

Inner wall

• Stipules : ?
• Carcass perforations: inner wall (IW) : None (perforation and/or inner wall)
• 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 : Cylindrical-conical
• Shape of cup bulges : None
• Number of walls : 1
• 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 : Botoman
• Botoman : 1 ; 2
• Geographical repartition : Canada ; Russia
• Russia : Altay Sayan

Systematic

• Orders : Monocyathida
• Famillies inside the Monocyathida : Favilynthidae

External view

• Cup shapes : Cylindrical-conical
• Shape of cup bulges : None
• Structure of outer carcass wall (OW/SW) : Carcass wall well defined
• Habitus : Solitary ; Modular
• Type of modularity : Branching by longitudinal subdivisions ; Catenulate
• Carcass bumps: outer wall or single wall (OW/SW) : None
• Carcass external plates: outer wall or single wall (OW/SW) : Present
• Type of carcass external plates (OW/SW) : Bracts
• Shape of carcass external plates (OW/SW) : ?
• Direction of carcass external plates (OW/SW) : ?
• 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 : 1
• Structure of outer carcass wall (OW/SW) : Carcass wall well defined
• Habitus : Solitary ; Modular
• Central Cavity (or internal if one wall) : Empty
• Carcass perforations: outer wall or single wall (OW/SW) : Canals
• Relationship between carcass canals and intersept (OW/SW) : No intervallar vertical elements
• Carcass bumps: outer wall or single wall (OW/SW) : None
• Carcass external plates: outer wall or single wall (OW/SW) : Present
• Carcass perforations: inner wall (IW) : None (perforation and/or inner wall)
• 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 : 1
• Structure of outer carcass wall (OW/SW) : 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) : Canals
• Shape of carcass canals (OW/SW) : Straight
• Direction of carcass canals (OW/SW) : Upwardly opening ; Horizontal opening
  (horizontal to upwardly opening)
• Origin of carcass canals (OW/SW) : Limited to the carcass
• Relationship between carcass canals and intersept (OW/SW) : No intervallar vertical elements
• Carcass bumps: outer wall or single wall (OW/SW) : None
• Carcass external plates: outer wall or single wall (OW/SW) : Present
• Type of carcass external plates (OW/SW) : Bracts
• Shape of carcass external plates (OW/SW) : ?
• Direction of carcass external plates (OW/SW) : ?
• Stipules : ?
• Type of morphological tubes (OW/SW) : ?
• Carcass perforations: inner wall (IW) : None (perforation and/or inner wall)
• 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 : None
• Other aquiferous unit : None

Oblique section

• Shape of cup bulges : None
• Number of walls : 1
• Structure of outer carcass wall (OW/SW) : Carcass wall well defined
• Habitus : Solitary ; Modular
• Central Cavity (or internal if one wall) : Empty
• Carcass perforations: outer wall or single wall (OW/SW) : Canals
• Shape of carcass canals (OW/SW) : Straight
• Direction of carcass canals (OW/SW) : Upwardly opening ; Horizontal opening
  (horizontal to upwardly opening)
• Origin of carcass canals (OW/SW) : Limited to the carcass
• Relationship between carcass canals and intersept (OW/SW) : No intervallar vertical elements
• Carcass bumps: outer wall or single wall (OW/SW) : None
• Carcass external plates: outer wall or single wall (OW/SW) : Present
• Stipules : ?
• Type of morphological tubes (OW/SW) : ?
• Carcass perforations: inner wall (IW) : None (perforation and/or inner wall)
• 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 : None
• Other aquiferous unit : None

Tangential section

• Thorny corolla : None