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Hermatostroma
Classification
Phylum:
Porifera
Class:
Stromatoporoidea
Order:
Stromatoporellida
Superfamily:
Unknown
Family:
Trupetostromatidae
Formal Genus Name and Reference:
Hermatostroma NICHOLSON, 1886a, p. 105
Type Species:
H. schlueteri Nicholson, 1886a, p. 105-106, OD, NICHOLSON, 1892, p. 215-219, holotype, NHM P5527
Images
(Click to enlarge in a new window)
Fig. 444a–d. *H. schlueteri, holotype, NHMP5527, Middle Devonian, Hebborn, Paffrath District, Germany; a, longitudinal section, showing grid of pillars and laminae; b, tangential section, showing pillars, round in cross section, X10; c, longitudinal section showing peripheral vesicles and compact pillars, X50; d, tangential section, showing peripheral vesicles, ×50 (Stearn, 2011b).
Synonyms
Argostroma
Geographic Distribution
Australia (Queensland), Russia (Kuznetsk Basin), Eifelian, Australia (Canning Basin, Queensland), Belgium (Ardennes), China (Guangxi, Guizhou, Yunnan), France (Boulonnais, Ancenis), Poland (Holy Cross Mountains), Thailand, Givetian, Czech Republic (Bohemia), England (Devon), Germany (Eifel), China (Guangxi, Sichuan, Yunnan), USA (Missouri), Middle Devonian, Australia (Canning Basin), Belgium (Ardennes), Canada (Alberta, Manitoba, Saskatchewan), China (Sichuan, Yunnan), Czech Republic (Moravia),Germany, Poland (Holy Cross Mountains), Russia (northeastern Siberia), USA (Iowa), Frasnian
Age Range
Beginning Stage in Treatise Usage:
Middle Devonian (Eifelian)
Beginning International Stage:
Eifelian
Fraction Up In Beginning Stage:
0
Beginning Date:
394.3
Ending Stage in Treatise Usage:
Upper Devonian (Frasnian)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Laminae extensive, prominent, tripartite with central dark zone, or light zone and more opaque lateral zones, penetrated by large pores between the pillars, pillars spool shaped, confined to interlaminar spaces, regularly superposed in longitudinal section, subcircular in tangential section, surrounded by peripheral cyst plates or bordered by peripheral vesicles. Microstructure compact, vacuolate, cellular. [Hermatostroma may grade into Trupetostroma through forms with lines of vacuoles along the pillar edges.]
References
Nicholson, H. A. 1886a. A Monograph of the British Stromatoporoids. Part I, General Introduction, vol. 39. Palaeontographical Society. London. p. 1-130, fig. 1-17, pl. 1-11.
Museum or Author Information
Classification
Phylum:
Porifera
Class:
Stromatoporoidea
Order:
Stromatoporellida
Superfamily:
Unknown
Family:
Trupetostromatidae
Formal Genus Name and Reference:
Hermatostroma NICHOLSON, 1886a, p. 105
Type Species:
H. schlueteri Nicholson, 1886a, p. 105-106, OD, NICHOLSON, 1892, p. 215-219, holotype, NHM P5527
Images
(Click to enlarge in a new window)
Fig. 444a–d. *H. schlueteri, holotype, NHMP5527, Middle Devonian, Hebborn, Paffrath District, Germany; a, longitudinal section, showing grid of pillars and laminae; b, tangential section, showing pillars, round in cross section, X10; c, longitudinal section showing peripheral vesicles and compact pillars, X50; d, tangential section, showing peripheral vesicles, ×50 (Stearn, 2011b).
Synonyms
Argostroma
Geographic Distribution
Australia (Queensland), Russia (Kuznetsk Basin), Eifelian, Australia (Canning Basin, Queensland), Belgium (Ardennes), China (Guangxi, Guizhou, Yunnan), France (Boulonnais, Ancenis), Poland (Holy Cross Mountains), Thailand, Givetian, Czech Republic (Bohemia), England (Devon), Germany (Eifel), China (Guangxi, Sichuan, Yunnan), USA (Missouri), Middle Devonian, Australia (Canning Basin), Belgium (Ardennes), Canada (Alberta, Manitoba, Saskatchewan), China (Sichuan, Yunnan), Czech Republic (Moravia),Germany, Poland (Holy Cross Mountains), Russia (northeastern Siberia), USA (Iowa), Frasnian
Age Range
Beginning Stage in Treatise Usage:
Middle Devonian (Eifelian)
Beginning International Stage:
Eifelian
Fraction Up In Beginning Stage:
0
Beginning Date:
394.3
Ending Stage in Treatise Usage:
Upper Devonian (Frasnian)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Laminae extensive, prominent, tripartite with central dark zone, or light zone and more opaque lateral zones, penetrated by large pores between the pillars, pillars spool shaped, confined to interlaminar spaces, regularly superposed in longitudinal section, subcircular in tangential section, surrounded by peripheral cyst plates or bordered by peripheral vesicles. Microstructure compact, vacuolate, cellular. [Hermatostroma may grade into Trupetostroma through forms with lines of vacuoles along the pillar edges.]
References
Nicholson, H. A. 1886a. A Monograph of the British Stromatoporoids. Part I, General Introduction, vol. 39. Palaeontographical Society. London. p. 1-130, fig. 1-17, pl. 1-11.