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Actinostromaria

Classification

    Phylum:  
Porifera
    Class:  
Demospongiae
    Order:  
Agelasida
    Family:  
Actinostromariidae
    Formal Genus Name and Reference:  
Actinostromaria Munier-Chalmas in TORNQUIST, 1901, p. 1116
    Type Species:  
A. stellata Dehorne, 1915, p. 733; SD Dehorne, 1915, p. 733; according to Dehorne (1915, p. 733), Munier-Chalmas neither described nor illustrated A. stellata, and thus a holotype was not originally designated, and now type material has been lost


Images

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Fossil Image
Fig. 170, 1a-b. A. sp., light photomicrograph, upper Oxfordian, Trnovski Gost, Slovenia, a, longitudinal section, NHM no. H 5491, X8, b, transverse section, NHM no. H 5492, X8 (West & others, 2013)


Synonyms



Geographic Distribution

France, Slovakia, Japan


Age Range

    Beginning Stage in Treatise Usage:  
Upper Jurassic
    Beginning International Stage:  
Oxfordian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
161.53
    Ending Stage in Treatise Usage:  
Upper Cretaceous
    Ending International Stage:  
Maastrichtian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
66.04


Description

Open reticulate arrangement of pillars and pillar-lamellae with fibrous orthogonal microstructure with a spicule framework of styles and possible triaxines.




References

Tornquist, A. 1901. Über mesozoische Stromatoporoiden. Sitzungsberichte der Königlich Preussischen Akademie der Wissenschaften zu Berlin, Jahrgang 1901:1115-1123.


Museum or Author Information

West & others, 2013