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Anostylostroma

Classification

    Phylum:  
Porifera
    Class:  
Stromatoporoidea
    Order:  
Clathrodictyida
    Family:  
Anostylostromatidae
    Formal Genus Name and Reference:  
Anostylostroma PARKS, 1936, p. 44
    Type Species:  
A. hamiltonense Parks, 1936, p. 46, OD, emend., Stearn, 1991, p. 612, holotype ROM 16536 (2240)


Images

(Click to enlarge in a new window)
Fig. 422, 1a-b. *A. hamiltonense, Long Lake, Alpena, Michigan, Hamilton Formation, holotype ROM 16536 (2240), longitudinal and tangential sections, X10 (Nestor, 2011).


Synonyms



Geographic Distribution

Canada (Arctic islands), China (Guangxi), Russia (eastern Urals, Kuznetsk Basin), United States (Indiana, Missouri), Middle Devonian, Kazakhstan, Russia (Pechora Basin), Frasnian, China (Guangxi), France, Germany (Aachen), Russia (Pechora Basin), upper Famennian


Age Range

    Beginning Stage in Treatise Usage:  
Middle Devonian
    Beginning International Stage:  
Eifelian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
394.3
    Ending Stage in Treatise Usage:  
Upper Devonian (upper Famennian)
    Ending International Stage:  
Famennian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
359.3


Description

Growth form laminar to domical, laminae thin, planar, penetrated by scattered pores, pillars thick, expanding and branching at tops, oblong to vermiform in tangential section, galleries irregular, dissepiments common, astrorhizae rare, small




References

Parks, W. A. 1936. Devonian stromatoporoids of North America, part 1. University of Toronto Studies, Geological Series 39:1-125, 19 pl.


Museum or Author Information

ROM, Nestor, 2011