Carinacyathus

Carinacyathus VOLOGDIN, 1932

Specimen-type: Carinacyathus loculatus holotype, VOLOGDIN, 1932, text-fig. 28, pl. 10, fig. 5

Systematics:
Order: AJACICYATHIDA R. Bedford& J. Bedford, 1939
Suborder: AJACICYATHINA R. Bedford& J. Bedford, 1939
Superfamily: ETHMOPHYLLOIDEA Okulitch, 1937
Family: CARINACYATHIDAE Krasnopeeva, 1953

Carinacyathus Carinacyathus loculatus VOLOGDIN holotype TsNIGRm 45a/2957 Botoman, Lebed’ River, Altay Sayan, Russia Longitudinal section (outer wall to right), (VOLOGDIN, 1932).

Carinacyathus Carinacyathus loculatus VOLOGDIN holotype TsNIGRm 45a/2957 Botoman, Lebed’ River, Altay Sayan, Russia Transverse section (outer wall at top) (VOLOGDIN, 1932).

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) : Downwardly opening
• Origin of carcass canals (OW/SW) : Limited to the carcass
• Relationship between carcass canals and intersept (OW/SW) : Several rows of canals per intersept
• 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) : Planar
• Direction of carcass external plates (OW/SW) : Upwardly projecting
• Stipules : Present on outer carcass wall ; Present on inner carcass wall
• Type of morphological tubes (OW/SW) : V-shaped
• Additional sheath : None

Inner wall

• Structure of inner carcass wall (IW) : Carcass wall well defined
• Stipules : Present on outer carcass wall ; Present on inner carcass wall
• Carcass perforations: inner wall (IW) : Canals
• Constitution of carcass canal system (IW) : 1 zone
• Shape of carcass canals zone A (IW) : Straight
• Porosity of carcass canals zone A (IW) : Non-porous
• Relationship between carcass canals zone A and intersept (IW) : 1 row of canals per intersept
• Direction of carcass canals zone A (IW) : Downwardly opening
• Building of carcass perforations (IW) : Without participation of vertical structures
• Carcass external plates: inner carcass wall (IW) : Present
• Type of carcass external plates (IW) : Bracts
• Localisation of carcass bracts (IW) : Bract arises on inner wall
• Shape of carcass external plates (IW) : Planar ; Arcuate
• Direction of carcass external plates (IW) : Upwardly projecting
• Type of morphological tubes (IW) : V-shaped
• Additional sheath : None

Intervallum

• Vertical intervallar structures : Present
• Type of vertical intervallar structures : Septa
• Repartition of vertical intervallar structures pores : Completely porous
• Porosity of vertical intervallar structures : Coarsely porous
• Pores of vertical intervallar structures : Circular pores
• Link between vertical intervallar structures : None
• Intervallar cells : None
• Tabulae : Present ; none
  (pectinate tabulae may be present)
• Building of tabulae : Independent from walls
• Porosity of tabulae : Pecten
  (pectinate tabulae may be present)

Others informations

• Cup shapes : Cylindrical-conical
• Shape of cup bulges : None
• Number of walls : 2
• 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 : Atdabanian ; Botoman
• Atdabanian : 1 ; 2 ; 3 ; 4
• Botoman : 1 ; 2 ; 3
• Geographical repartition : Mongolia ; Russia
• Russia : Altay Sayan ; Far East ; Kolyma ; Siberian Platform ; Transbaikal ; Tuva

Systematic

• Orders : Ajacicyathida
• Suborders inside the Ajacicyathida : Ajacicyathina
• Superfamillies inside the Ajacicyathina : Ethmophylloidea
• Famillies inside the Ajacicyathina : Carinacyathidae

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 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) : Planar
• Direction of carcass external plates (OW/SW) : Upwardly projecting
• Carcass external plates: inner carcass wall (IW) : Present
• Type of carcass external plates (IW) : Bracts
• Localisation of carcass bracts (IW) : Bract arises on inner wall
• Shape of carcass external plates (IW) : Planar ; Arcuate
• Direction of carcass external plates (IW) : Upwardly projecting
• 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) : Canals
• Relationship between carcass canals and intersept (OW/SW) : Several rows of canals per intersept
• 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) : Canals
• Relationship between carcass canals zone A and intersept (IW) : 1 row of canals per intersept
• Building of carcass perforations (IW) : Without participation of vertical structures
• Carcass external plates: inner carcass wall (IW) : Present
• Additional sheath : None
• Thorny corolla : None
• Vertical intervallar structures : Present
• Type of vertical intervallar structures : Septa
• Repartition of vertical intervallar structures pores : Completely porous
• Link between vertical intervallar structures : None
• Intervallar cells : None
• Tabulae : Present ; none
  (pectinate tabulae may be present)
• Porosity of tabulae : Pecten
  (pectinate tabulae may be present)
• 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 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) : Downwardly opening
• Origin of carcass canals (OW/SW) : Limited to the carcass
• Relationship between carcass canals and intersept (OW/SW) : Several rows of canals per intersept
• 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) : Planar
• Direction of carcass external plates (OW/SW) : Upwardly projecting
• Stipules : Present on outer carcass wall ; Present on inner carcass wall
• Type of morphological tubes (OW/SW) : V-shaped
• Carcass perforations: inner wall (IW) : Canals
• Constitution of carcass canal system (IW) : 1 zone
• Shape of carcass canals zone A (IW) : Straight
• Porosity of carcass canals zone A (IW) : Non-porous
• Direction of carcass canals zone A (IW) : Downwardly opening
• Carcass external plates: inner carcass wall (IW) : Present
• Type of carcass external plates (IW) : Bracts
• Localisation of carcass bracts (IW) : Bract arises on inner wall
• Shape of carcass external plates (IW) : Planar ; Arcuate
• Direction of carcass external plates (IW) : Upwardly projecting
• Type of morphological tubes (IW) : V-shaped
• Additional sheath : None
• Thorny corolla : None
• Vertical intervallar structures : Present
• Type of vertical intervallar structures : Septa
• Repartition of vertical intervallar structures pores : Completely porous
• Porosity of vertical intervallar structures : Coarsely porous
• Pores of vertical intervallar structures : Circular pores
• Link between vertical intervallar structures : None
• Intervallar cells : None
• Tabulae : Present ; none
  (pectinate tabulae may be present)
• Building of tabulae : Independent from walls
• 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) : Canals
• Shape of carcass canals (OW/SW) : Straight
• Direction of carcass canals (OW/SW) : Downwardly opening
• Origin of carcass canals (OW/SW) : Limited to the carcass
• Relationship between carcass canals and intersept (OW/SW) : Several rows of canals per intersept
• Carcass bumps: outer wall or single wall (OW/SW) : None
• Carcass external plates: outer wall or single wall (OW/SW) : Present
• Stipules : Present on outer carcass wall ; Present on inner carcass wall
• Type of morphological tubes (OW/SW) : V-shaped
• Carcass perforations: inner wall (IW) : Canals
• Constitution of carcass canal system (IW) : 1 zone
• Shape of carcass canals zone A (IW) : Straight
• Porosity of carcass canals zone A (IW) : Non-porous
• Relationship between carcass canals zone A and intersept (IW) : 1 row of canals per intersept
• Direction of carcass canals zone A (IW) : Downwardly opening
• Building of carcass perforations (IW) : Without participation of vertical structures
• Carcass external plates: inner carcass wall (IW) : Present
• Type of morphological tubes (IW) : V-shaped
• Additional sheath : None
• Thorny corolla : None
• Vertical intervallar structures : Present
• Type of vertical intervallar structures : Septa
• Repartition of vertical intervallar structures pores : Completely porous
• Porosity of vertical intervallar structures : Coarsely porous
• Pores of vertical intervallar structures : Circular pores
• Link between vertical intervallar structures : None
• Intervallar cells : None
• Tabulae : Present ; none
  (pectinate tabulae may be present)
• Building of tabulae : Independent from walls
• Porosity of tabulae : Pecten
  (pectinate tabulae may be present)
• Chambers : None
• Other aquiferous unit : None

Tangential section

• Thorny corolla : None
• Repartition of vertical intervallar structures pores : Completely porous
• Porosity of vertical intervallar structures : Coarsely porous
• Pores of vertical intervallar structures : Circular pores
• Porosity of tabulae : Pecten
  (pectinate tabulae may be present)