Archaeopharetra

Archaeopharetra R. BEDFORD& W. R. BEDFORD, 1936

Specimen-type: Archaeopharera typica holotype, R. BEDFORD& W. R. BEDFORD, 1936, fig. 75 p. 17

Systematics:
Order: ARCHAEOCYATHIDA Okulitch, 1935
Suborder: ARCHAEOCYATHINA Okulitch, 1935>
Superfamily: ARCHAEOCYATHOIDEA Hinde, 1889
Family:ARCHAEOPHARETRIDAE R. Bedford& W. R. Bedford, 1936

Note:
Presence in Europe (Spain) isn't sure.

Archaeopharetra Archaeopharetra irregularis (TAYLOR) lectotype SAM T1590 Botoman, Ajax Mine, Australia Oblique longitudinal view (DEBRENNE, A. ZHURAVLEV & KRUSE, 2002)

Archaeopharetra Archaeopharetra typica R. BEDFORD & W. R. BEDFORD (= Archaeopharetra irregularis (TAYLOR)) holotype SAM P969 Botoman, Ajax Mine, Australia Longitudinal view (by M. DEBRENNE)

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) : None (external plates and/or inner wall)
• 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 ; Pseudotaeniae
• Repartition of vertical intervallar structures pores : ?
• Porosity of vertical intervallar structures : Coarsely porous
• Pores of vertical intervallar structures : Circular pores
• Link between vertical intervallar structures : Synapticulae
• Repartition of synapticulae : At each interpore node
• Intervallar cells : None
• Tabulae : Present ; none
  (concentrically porous segmented tabulae may be present)
• Building of tabulae : Extensions of outer wall
• Porosity of tabulae : Concentrical pores
  (concentrically porous segmented 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 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 : Atdabanian ; Botoman
• Atdabanian : 1 ; 2 ; 3 ; 4
• Botoman : 1 ; 2 ; 3
• Geographical repartition : Antarctica ; Australia ; China ; Europe ; Mongolia ; Russia ; South Africa
  (China: South China.)
• Europe : Iberia ; Italia: Sardinia
  (Presence in Spain isn't sure.)
• Russia : Altay Sayan ; Far East ; Tuva

Systematic

• Orders : Archaeocyathida
• Suborders inside the Archaeocyathida : Archaeocyathina
• Superfamillies inside the Archaeocyathina : Archaeocyathoidea
• Famillies inside the Archaeocyathina : Archaeopharetridae

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) : None (external plates and/or inner wall)
• 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) : None (external plates and/or inner wall)
• Additional sheath : None ; Present on outer wall (or single wall)
• Thorny corolla : None
• Vertical intervallar structures : Present
• Type of vertical intervallar structures : Taeniae ; Pseudotaeniae
• Repartition of vertical intervallar structures pores : ?
• Link between vertical intervallar structures : Synapticulae
• Repartition of synapticulae : At each interpore node
• Intervallar cells : None
• Tabulae : Present ; none
  (concentrically porous segmented tabulae may be present)
• Porosity of tabulae : Concentrical pores
  (concentrically porous segmented 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 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) : None (external plates and/or inner wall)
• 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 ; Pseudotaeniae
• Repartition of vertical intervallar structures pores : ?
• Porosity of vertical intervallar structures : Coarsely porous
• Pores of vertical intervallar structures : Circular pores
• Link between vertical intervallar structures : Synapticulae
• Repartition of synapticulae : At each interpore node
• Intervallar cells : None
• Tabulae : Present ; none
  (concentrically porous segmented tabulae may be 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) : None (external plates and/or inner wall)
• 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 ; Pseudotaeniae
• Repartition of vertical intervallar structures pores : ?
• Porosity of vertical intervallar structures : Coarsely porous
• Pores of vertical intervallar structures : Circular pores
• Link between vertical intervallar structures : Synapticulae
• Repartition of synapticulae : At each interpore node
• Intervallar cells : None
• Tabulae : Present ; none
  (concentrically porous segmented tabulae may be present)
• Building of tabulae : Extensions of outer wall
• Porosity of tabulae : Concentrical pores
  (concentrically porous segmented tabulae may be present)
• 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 : Coarsely porous
• Pores of vertical intervallar structures : Circular pores
• Porosity of tabulae : Concentrical pores
  (concentrically porous segmented tabulae may be present)