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Orionastraea

Classification

    Phylum:  
Cnidaria
    Class:  
Anthozoa
    Subclass:  
Rugosa
    Order:  
Stauriida
    Suborder:  
Lithostrotionina
    Family:  
Lithostrotionidae
    Subfamily:  
Lithostrotioninae
    Formal Genus Name and Reference:  
Orionastraea SMITH, 1917, p. 294
    Type Species:  
Sarcinula phillipsi McCov, 1849, p. 125, OD, †A2188, SM, Cambridge, lectotype by SMITH, 1917, p. 295


Images

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Fossil Image
Fig. 249,4a,b. *O. phillipsi (McCoY), Visean, U.K., Corwen, N. Wales; a,b, transv., long. secs., X4, X2 (Hudson, 1929).


Synonyms



Geographic Distribution

Eu. (U. K.-Eire-Urals-N. Zemlya-Russ. Platf- Donbas) - Asia (Japan - Hansu) - Australia (Queensl.-New S.Wales); ?L.Perm., N.Am.(Nev.).


Age Range

    Beginning Stage in Treatise Usage:  
L.Carb.(Visean)
    Beginning International Stage:  
Visean
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
346.73
    Ending Stage in Treatise Usage:  
L.Carb.(Visean)
    Ending International Stage:  
Visean
    Fraction Up In Ending Stage:  
100
    Ending Date:  
330.34


Description

Astreoid, thamnasterioid, or aphroid, major and minor septa long, may be discontinuous toward periphery, columella formed by dilatation and upgrowth of axial end of long counter septum, may be mainly absent in diphymorph species, tabulae conical, complete or incomplete, dissepiments small, normal except peripherally in aphroid forms [see HUDSON, 1929, p. 441].




References



Museum or Author Information