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Densastroma

Classification

    Phylum:  
Porifera
    Class:  
Stromatoporoidea
    Order:  
Actinostromatida
    Family:  
Densastromatidae
    Formal Genus Name and Reference:  
Densastroma FLÜGEL, 1959, p. 196
    Type Species:  
*Stromatopora astroites ROSEN, 1867, p. 62, OD


Images

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Fig. 433, 1a-b. *D. astroites (Rosen), lectotype, Ludlow, Saarema, Estonia, IGTUT 115-1 (Co3181), a, longitudinal section, b, tangential section, X30 (Stock, 2012, courtesy of Heldur Nestor).


Synonyms



Geographic Distribution

Sweden (Gotland), United States (Iowa), Llandovery, Canada (Quebec), Estonia, Sweden (Gotland), Ukraine (Podolia), United States (Kentucky), Wenlock, China (Inner Mongolia), upper Silurian, Australia (New South Wales), Canada (Quebec), Estonia, Russia (Siberian Platform, Urals), Sweden (Gotland), Ukraine (Podolia), Uzbekistan, Ludlow, Canada (Quebec), Estonia, Russia (Urals), Ukraine (Podolia), Pridoli


Age Range

    Beginning Stage in Treatise Usage:  
lower Silurian (Llandovery)
    Beginning International Stage:  
Rhuddanian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
443.07
    Ending Stage in Treatise Usage:  
upper Silurian (Pridoli)
    Ending International Stage:  
Pridoli
    Fraction Up In Ending Stage:  
100
    Ending Date:  
419


Description

Microcolliculi horizontally aligned, giving impression of microlaminae, micropillars short, forming orthoreticular pattern




References

Flügel, Erik. 1959. Die Gattung Actinostroma Nicholson und ihre Arten (Stromatoporoidea). Annalen Naturhistorisches Museum in Wien 63:90-273, pl. 6-7, 27 tables.


Museum or Author Information

Stock, 2012