Archaeocyathan knowledge base (Cambrian)

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Bicoscinus

Bicoscinus DEBRENNE, 1977a

Specimen-type: Bicoscinus sdzuyi holotype, DEBRENNE, 1977a, pl. 14, fig. 2

Systematics:
Order: KAZACHSTANICYATHIDA Konyushkov, 1967
Suborder: KAZACHSTANICYATHINA Konyushkov, 1967
Family: KOROVINELLIDAE Khalfina, 1960

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• Suborders inside the Kazachstanicyathida : Kazachstanicyathina

Outer wall

• Presence of carcass external plates: outer wall or single wall (OW/SW) : None
• Type of carcass perforations: outer wall or single wall (OW/SW) : None
• Presence of carcass bumps: outer wall or single wall (OW/SW) : None
• Presence of stipules (OW/SW) : None
• Shape of morphological tubes (OW/SW) : None
• Structure of outer carcass wall (OW/SW) : Carcass wall well defined
• Type of additional sheath (OW/SW) : None

Inner wall

• Shape of carcass perforations openings (IW) : Simple
• Rows number of carcass pores per intertabula (IW) : Several rows of pores between two successive tabulae only
• Type of carcass perforations: inner wall (IW) : Pores
• Building of carcass perforations (IW) : Without participation of vertical structures
• Presence of carcass external plates: inner carcass wall (IW) : None (external plates and/or inner wall)
• Shape of morphological tubes (IW) : None
• Structure of inner carcass wall (IW) : Carcass wall well defined
• Type of additional sheath (IW) : None
• Presence of stipules (IW) : None
• Rows number of carcass perforations per intersept (IW) : No vertical intervallar element
• Subdivision of carcass perforations openings (IW) : Without subdivision

Intervallum

• Presence of intervallar cells : None
• Type of links between intervallar structures : None ; Pillars
• Presence of vertical intervallar structures : None
• Presence of tabulae : Present
• Pores shape of tabulae : Simple pores
• Repartition of pillars : None in initial chamber, present in subsequent chambers
• Building of tabulae : Independent from walls

Others informations

• Number of walls : 2
• Stratigraphical extension : Botoman
• Geographical repartition : Morocco
• Shape of cup bulges : None
• Presence of chambers : Present
• Type of habitus : Solitary ; Modular
• Structure of central Cavity (or internal if one wall) : Empty
• Presence of thorny corolla : None
• Botoman : 1
• Type of chambers stack : Regular stack
• Type of modularity : Massive pseudocolony
• Chambers number : Several
• Cup shapes : Cylindrical-conical
• Type of other aquiferous unit : None
• Shape of initial chamber : Hollow and elongate
• Shape of subsequent chambers : Matresslike

Systematic

• Orders : Kazachstanicyathida
• Famillies inside the Kazachstanicyathida : Korovinellidae
• Cup shapes : Cylindrical-conical

External view

• Cup shapes : Cylindrical-conical
• Shape of cup bulges : None
• Structure of outer carcass wall (OW/SW) : Carcass wall well defined
• Type of modularity : Massive pseudocolony
• Type of habitus : Solitary ; Modular
• Presence of carcass bumps: outer wall or single wall (OW/SW) : None
• Presence of carcass external plates: outer wall or single wall (OW/SW) : None
• Presence of carcass external plates: inner carcass wall (IW) : None (external plates and/or inner wall)
• Presence of thorny corolla : None
• Type of additional sheath (OW/SW) : None
• Type of additional sheath (IW) : None
• Shape of subsequent chambers : Matresslike
• Presence of chambers : Present
• Type of other aquiferous unit : None
• Chambers number : Several
• Type of chambers stack : Regular stack
• Shape of initial chamber : Hollow and elongate
• Number of walls : 2

Transverse section

• 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
• Number of walls : 2
• Type of habitus : Solitary ; Modular
• Type of carcass perforations: outer wall or single wall (OW/SW) : None
• Presence of carcass bumps: outer wall or single wall (OW/SW) : None
• Building of carcass perforations (IW) : Without participation of vertical structures
• Type of carcass perforations: inner wall (IW) : Pores
• Structure of central Cavity (or internal if one wall) : Empty
• Presence of vertical intervallar structures : None
• Presence of thorny corolla : None
• Type of links between intervallar structures : None ; Pillars
• Presence of intervallar cells : None
• Pores shape of tabulae : Simple pores
• Presence of tabulae : Present
• Type of other aquiferous unit : None
• Presence of carcass external plates: outer wall or single wall (OW/SW) : None
• Presence of carcass external plates: inner carcass wall (IW) : None (external plates and/or inner wall)
• Rows number of carcass perforations per intersept (IW) : No vertical intervallar element

Longitudinal section

• 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
• Number of walls : 2
• Type of modularity : Massive pseudocolony
• Type of habitus : Solitary ; Modular
• Type of carcass perforations: outer wall or single wall (OW/SW) : None
• Presence of carcass bumps: outer wall or single wall (OW/SW) : None
• Presence of carcass external plates: outer wall or single wall (OW/SW) : None
• Cup shapes : Cylindrical-conical
• Type of carcass perforations: inner wall (IW) : Pores
• Structure of central Cavity (or internal if one wall) : Empty
• Presence of carcass external plates: inner carcass wall (IW) : None (external plates and/or inner wall)
• Shape of morphological tubes (IW) : None
• Presence of vertical intervallar structures : None
• Presence of thorny corolla : None
• Repartition of pillars : None in initial chamber, present in subsequent chambers
• Type of links between intervallar structures : None ; Pillars
• Presence of intervallar cells : None
• Building of tabulae : Independent from walls
• Presence of tabulae : Present
• Type of other aquiferous unit : None
• Chambers number : Several
• Type of chambers stack : Regular stack
• Presence of chambers : Present
• Type of additional sheath (OW/SW) : None
• Type of additional sheath (IW) : None
• Presence of stipules (IW) : None
• Shape of initial chamber : Hollow and elongate
• Shape of subsequent chambers : Matresslike
• Shape of morphological tubes (OW/SW) : None
• Rows number of carcass pores per intertabula (IW) : Several rows of pores between two successive tabulae only
• Organization of tabulae inside the cup : Regular

Oblique section

• 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
• Number of walls : 2
• Type of habitus : Solitary ; Modular
• Type of carcass perforations: outer wall or single wall (OW/SW) : None
• Presence of carcass bumps: outer wall or single wall (OW/SW) : None
• Presence of stipules (OW/SW) : None
• Shape of morphological tubes (OW/SW) : None
• Rows number of carcass pores per intertabula (IW) : Several rows of pores between two successive tabulae only
• Cup shapes : Cylindrical-conical
• Building of carcass perforations (IW) : Without participation of vertical structures
• Type of carcass perforations: inner wall (IW) : Pores
• Structure of central Cavity (or internal if one wall) : Empty
• Shape of morphological tubes (IW) : None
• Presence of vertical intervallar structures : None
• Presence of thorny corolla : None
• Presence of intervallar cells : None
• Building of tabulae : Independent from walls
• Pores shape of tabulae : Simple pores
• Presence of tabulae : Present
• Chambers number : Several
• Type of chambers stack : Regular stack
• Presence of chambers : Present
• Type of other aquiferous unit : None
• Presence of carcass external plates: outer wall or single wall (OW/SW) : None
• Presence of carcass external plates: inner carcass wall (IW) : None (external plates and/or inner wall)
• Type of additional sheath (OW/SW) : None
• Type of additional sheath (IW) : None
• Presence of stipules (IW) : None
• Shape of initial chamber : Hollow and elongate
• Rows number of carcass perforations per intersept (IW) : No vertical intervallar element
• Shape of carcass perforations openings (IW) : Simple
• Type of links between intervallar structures : None ; Pillars
• Repartition of pillars : None in initial chamber, present in subsequent chambers
• Organization of tabulae inside the cup : Regular
• Shape of subsequent chambers : Matresslike
• Subdivision of carcass perforations openings (IW) : Without subdivision

Tangential section

• Shape of carcass perforations openings (IW) : Simple
• Presence of thorny corolla : None
• Pores shape of tabulae : Simple pores
• Subdivision of carcass perforations openings (IW) : Without subdivision

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Base mise à jour le 11 mars 2014 | Page générée avec Xper2 le 11 mars 2014