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Columnostroma
Classification
Phylum:
Porifera
Class:
Stromatoporoidea
Order:
Syringostromatida
Family:
Coenostromatidae
Formal Genus Name and Reference:
Columnostroma Bogoyavlenskaya, 1972b, p. 33
Type Species:
Coenostroma ristigouchense Spencer, 1884, p. 599; OD; specimen repository unknown, type slide 309, NHM. P5591
Images
(Click to enlarge in a new window)
Fig. 468a–d. *C. ristigouchense (Spencer), holotype, NHM. P5591, ?Lochkovian, Dalhousie, New Brunswick, Canada; a, longitudinal section (section is thick), X10; b, tangential section showing round pillars (subcolumns) joined by radial processes, X10; c, longitudinal section showing clinoreticular nature of pillars (subcolumns), X50; d, tangential section of microstructure, X50 (Stearn, 2011b).
Synonyms
Geographic Distribution
Canada (New Brunswick), Lochkovian; Australia (Victoria), Pragian; Russia (eastern Urals), Lower Devonian; Canada (Hudson Bay), USA (Indiana, Ohio), Emsian–Eifelian; England (?Devon), Russia (northern Urals, eastern slope of Urals, Kuznetsk Basin), Givetian
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (Lochkovian)
Beginning International Stage:
Lochkovian
Fraction Up In Beginning Stage:
0
Beginning Date:
419
Ending Stage in Treatise Usage:
Middle Devonian (Givetian)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Pillars (subcolumns) long, continuous, rarely joining or dividing, clinoreticular, round in tangential section and joined by radial processes (colliculi) forming colliculate laminae or locally thicker pachystromes; dissepiments common; pillars (subcolumns) separated by autotubes.
References
Museum or Author Information
Classification
Phylum:
Porifera
Class:
Stromatoporoidea
Order:
Syringostromatida
Family:
Coenostromatidae
Formal Genus Name and Reference:
Columnostroma Bogoyavlenskaya, 1972b, p. 33
Type Species:
Coenostroma ristigouchense Spencer, 1884, p. 599; OD; specimen repository unknown, type slide 309, NHM. P5591
Images
(Click to enlarge in a new window)
Fig. 468a–d. *C. ristigouchense (Spencer), holotype, NHM. P5591, ?Lochkovian, Dalhousie, New Brunswick, Canada; a, longitudinal section (section is thick), X10; b, tangential section showing round pillars (subcolumns) joined by radial processes, X10; c, longitudinal section showing clinoreticular nature of pillars (subcolumns), X50; d, tangential section of microstructure, X50 (Stearn, 2011b).
Synonyms
Geographic Distribution
Canada (New Brunswick), Lochkovian; Australia (Victoria), Pragian; Russia (eastern Urals), Lower Devonian; Canada (Hudson Bay), USA (Indiana, Ohio), Emsian–Eifelian; England (?Devon), Russia (northern Urals, eastern slope of Urals, Kuznetsk Basin), Givetian
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (Lochkovian)
Beginning International Stage:
Lochkovian
Fraction Up In Beginning Stage:
0
Beginning Date:
419
Ending Stage in Treatise Usage:
Middle Devonian (Givetian)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Pillars (subcolumns) long, continuous, rarely joining or dividing, clinoreticular, round in tangential section and joined by radial processes (colliculi) forming colliculate laminae or locally thicker pachystromes; dissepiments common; pillars (subcolumns) separated by autotubes.