Sigmofungia
Sigmofungia R. BEDFORD& W. R. BEDFORD, 1936
Specimen-type:
Sigmofungia flindersi lectotype, R. BEDFORD& W. R. BEDFORD,
1936, fig. 82
Systematics:
Order:
ARCHAEOCYATHIDA Okulitch, 1935
Suborder: ARCHAEOCYATHINA
Okulitch, 1935
Superfamily: ARCHAEOCYATHOIDEA Hinde, 1889
Family:ARCHAEOPHARETRIDAE
R. Bedford& W. R. Bedford, 1936
Sigmofungia Sigmofungia flindersi R. BEDFORD & W. R. BEDFORD lectotype SAM P963-115, -116 Botoman, Ajax Mine, Australia Transverse and longitudinal views (HILL, 1965) |
Sigmofungia Sigmofungia flindersi R. BEDFORD & W. R. BEDFORD lectotype SAM P963-115, -116 Botoman, Ajax Mine, Australia Oblique transverse view (by M. DEBRENNE) |
Sigmofungia Sigmofungia flindersi R. BEDFORD & W. R. BEDFORD lectotype SAM P963-115, -116 Botoman, Ajax Mine, Australia longitudinal view (by M. DEBRENNE) |
Sigmofungia Sigmofungia flindersi R. BEDFORD & W. R. BEDFORD lectotype SAM P963-115, -116 Botoman, Ajax Mine, Australia Transverse view (by M. DEBRENNE) |
Sigmofungia Sigmofungia flindersi R. BEDFORD & W. R. BEDFORD lectotype SAM P963-115, -116 Botoman, Ajax Mine, Australia Detail of inner wall in oblique view (by M. DEBRENNE) |
Sigmofungia Sigmofungia flindersi R. BEDFORD & W. R. BEDFORD lectotype SAM P963-115, -116 Botoman, Ajax Mine, Australia Detail of outer wall in tangential view (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) : Subdivided
- Size of carcass pores (OW/SW) : Uniform size
- Repartition of carcass pores (OW/SW) : Regular repartition
- Repartition types of carcass pores (OW/SW) : Pores grouped into clusters
- 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 ; Present on outer wall (or single wall)
- Type of additional sheath (OW/SW) : Sieve formed by protrusions
- Repartition of bracts on additional sheath (OW/SW) : No bract on additional sheath
- Type of shieve (OW/SW) : Protrusions aren't completely connected
- Repartition of micropores (OW/SW) : Irregular
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) : 1
- 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) : Present
- Type of carcass external plates (IW) : Poretubes
- Shape of carcass external plates (IW) : S-shaped
- Direction of carcass external plates (IW) : Upwardly projecting
- Type of morphological tubes (IW) : None
- Additional sheath : None ; Present on outer wall (or single wall)
Intervallum
- Vertical intervallar structures : Present
- Type of vertical intervallar structures : Taeniae
- Repartition of vertical intervallar structures pores : ?
- Porosity of vertical intervallar structures : Finely porous
- Pores of vertical intervallar structures : Circular pores
- Link between vertical intervallar structures : Synapticulae
- Repartition of synapticulae : Random
- Intervallar cells : None
- Tabulae : Present
- Building of tabulae : Extensions of outer wall
- Porosity of tabulae : Concentrical pores
Others informations
- Cup shapes : Cylindrical-conical
- Shape of cup bulges : None
- Number of walls : 2
- Habitus : Solitary ; Modular
- Type of modularity : Branching by external budding ; Branching by longitudinal subdivisions
- Central Cavity (or internal if one wall) : Empty
- Thorny corolla : None
- Chambers : None
- Other aquiferous unit : None
- Stratigraphical extension : Botoman
- Botoman : 2 ; 3
- Geographical repartition : Antarctica ; Australia ; Mexico
Systematic
- Orders : Archaeocyathida
- Suborders inside the Archaeocyathida : Archaeocyathina
- Superfamillies inside the Archaeocyathina : Archaeocyathoidea
- Famillies inside the Archaeocyathina : Archaeocyathidae
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 external budding ; Branching by longitudinal subdivisions
- 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) : Present
- Type of carcass external plates (IW) : Poretubes
- Shape of carcass external plates (IW) : S-shaped
- Direction of carcass external plates (IW) : Upwardly projecting
- Additional sheath : None ; Present on outer wall (or single wall)
- Type of additional sheath (OW/SW) : Sieve formed by protrusions
- Repartition of bracts on additional sheath (OW/SW) : No bract on additional sheath
- Type of shieve (OW/SW) : Protrusions aren't completely connected
- Repartition of micropores (OW/SW) : Irregular
- 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) : Present
- Additional sheath : None ; Present on outer wall (or single wall)
- Thorny corolla : None
- Vertical intervallar structures : Present
- Type of vertical intervallar structures : Taeniae
- Repartition of vertical intervallar structures pores : ?
- Link between vertical intervallar structures : Synapticulae
- Repartition of synapticulae : Random
- Intervallar cells : None
- Tabulae : Present
- Porosity of tabulae : Concentrical pores
- 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 external budding ; Branching by longitudinal subdivisions
- 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) : Present
- Type of carcass external plates (IW) : Poretubes
- Shape of carcass external plates (IW) : S-shaped
- Direction of carcass external plates (IW) : Upwardly projecting
- Type of morphological tubes (IW) : None
- Additional sheath : None ; Present on outer wall (or single wall)
- Type of additional sheath (OW/SW) : Sieve formed by protrusions
- Repartition of bracts on additional sheath (OW/SW) : No bract on additional sheath
- Thorny corolla : None
- Vertical intervallar structures : Present
- Type of vertical intervallar structures : Taeniae
- Repartition of vertical intervallar structures pores : ?
- Porosity of vertical intervallar structures : Finely porous
- Pores of vertical intervallar structures : Circular pores
- Link between vertical intervallar structures : Synapticulae
- Repartition of synapticulae : Random
- Intervallar cells : None
- Tabulae : Present
- Building of tabulae : Extensions of outer wall
- 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) : ?
- 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) : 1
- 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) : Present
- Type of morphological tubes (IW) : None
- Additional sheath : None ; Present on outer wall (or single wall)
- Type of additional sheath (OW/SW) : Sieve formed by protrusions
- Repartition of bracts on additional sheath (OW/SW) : No bract on additional sheath
- Type of shieve (OW/SW) : Protrusions aren't completely connected
- Thorny corolla : None
- Vertical intervallar structures : Present
- Type of vertical intervallar structures : Taeniae
- Repartition of vertical intervallar structures pores : ?
- Porosity of vertical intervallar structures : Finely porous
- Pores of vertical intervallar structures : Circular pores
- Link between vertical intervallar structures : Synapticulae
- Repartition of synapticulae : Random
- Intervallar cells : None
- Tabulae : Present
- Building of tabulae : Extensions of outer wall
- Porosity of tabulae : Concentrical pores
- Chambers : None
- Other aquiferous unit : None
Tangential section
- Type of carcass pores (OW/SW) : Subdivided
- Size of carcass pores (OW/SW) : Uniform size
- Repartition of carcass pores (OW/SW) : Regular repartition
- Repartition types of carcass pores (OW/SW) : Pores grouped into clusters
- Type of carcass pores (IW) : Simple
- Repartition of bracts on additional sheath (OW/SW) : No bract on additional sheath
- Type of shieve (OW/SW) : Protrusions aren't completely connected
- Repartition of micropores (OW/SW) : Irregular
- Thorny corolla : None
- Repartition of vertical intervallar structures pores : ?
- Porosity of vertical intervallar structures : Finely porous
- Pores of vertical intervallar structures : Circular pores
- Porosity of tabulae : Concentrical pores