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Hammatostroma
Classification
Phylum:
Porifera
Class:
Stromatoporoidea
Order:
Clathrodictyida
Family:
Tienodictyidae
Formal Genus Name and Reference:
Hammatostroma STEARN, 1961, p. 939
Type Species:
H. albertense Stearn, 1961, p. 940, OD, holotype GSC 15318
Images
(Click to enlarge in a new window)
Fig. 421, 2a-b. *H. albertense, Cairn Formation, Frasnian, Isaac Creek, Rocky Mountains, Alberta, holotype GSC 15318, longitudinal and tangential sections, X10 (Nestor, 2011, courtesy of T. E. Bolton).
Synonyms
Geographic Distribution
Austria (Carnic Alps), Lower Devonian; China (Guangxi), Givetian; Canada (Alberta, Saskatchewan), China (Guangxi), Czech Republic (Moravia), Poland, Russia (Arctic islands, Timan, Urals), United States (Iowa), Frasnian
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian
Beginning International Stage:
Lochkovian
Fraction Up In Beginning Stage:
0
Beginning Date:
419
Ending Stage in Treatise Usage:
Upper Devonian (Frasnian)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Growth form domical to laminar, laminae planar or irregularly wavy, transversely fibrous, interlaminar spaces occupied by tangled, irregular structure, forming discontinuous, crumpled additional laminae in the middle part, galleries irregular, astrorhizae inconspicuous
References
Stearn, C. W. 1961. Devonian stromatoporoids of the Canadian Rocky Mountains. Journal of Paleontology 35:932-948, 3 fig., pl. 105-107.
Museum or Author Information
Classification
Phylum:
Porifera
Class:
Stromatoporoidea
Order:
Clathrodictyida
Family:
Tienodictyidae
Formal Genus Name and Reference:
Hammatostroma STEARN, 1961, p. 939
Type Species:
H. albertense Stearn, 1961, p. 940, OD, holotype GSC 15318
Images
(Click to enlarge in a new window)
Fig. 421, 2a-b. *H. albertense, Cairn Formation, Frasnian, Isaac Creek, Rocky Mountains, Alberta, holotype GSC 15318, longitudinal and tangential sections, X10 (Nestor, 2011, courtesy of T. E. Bolton).
Synonyms
Geographic Distribution
Austria (Carnic Alps), Lower Devonian; China (Guangxi), Givetian; Canada (Alberta, Saskatchewan), China (Guangxi), Czech Republic (Moravia), Poland, Russia (Arctic islands, Timan, Urals), United States (Iowa), Frasnian
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian
Beginning International Stage:
Lochkovian
Fraction Up In Beginning Stage:
0
Beginning Date:
419
Ending Stage in Treatise Usage:
Upper Devonian (Frasnian)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Growth form domical to laminar, laminae planar or irregularly wavy, transversely fibrous, interlaminar spaces occupied by tangled, irregular structure, forming discontinuous, crumpled additional laminae in the middle part, galleries irregular, astrorhizae inconspicuous
References
Stearn, C. W. 1961. Devonian stromatoporoids of the Canadian Rocky Mountains. Journal of Paleontology 35:932-948, 3 fig., pl. 105-107.