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Yuanophyllum

Classification

    Phylum:  
Cnidaria
    Class:  
Anthozoa
    Subclass:  
Rugosa
    Order:  
Stauriida
    Suborder:  
Aulophyllina
    Family:  
Aulophyllidae
    Subfamily:  
Dibunophyllinae
    Formal Genus Name and Reference:  
Yuanophyllum YÜ, 1931, p. 26
    Type Species:  
Y. kansuense, OD, 14882, IGP, Nanking


Images

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Fossil Image
Fig. 242,3a,b. *Y. kansuense, holotype, Visean, Choniukou F., Kansu, Cho-niu-kou, We-wei-hsien, a, b, transv., long. secs., X2.0 (Yü, 1934)


Synonyms

Yakovleviella


Geographic Distribution

Asia(Kansu, Anwuei, Kweichow, Sinkiang, Japan, ?Kuzbas, Kazakh.)


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

Solitary, moderately large to large, convex side cardinal, with short and commonly thickened medial plate that may be continuous with counter septum, major septa thickened at least in cardinal quadrants of tabularium and withdrawn unequally from medial plate, which shows few or no traces of septal lamellae, cardinal septum short in wide, open fossula that indents dissepimentarium, minor septa discontinuous except at periphery in mainly herringbone dissepimentarium, tabular floors broadly conical, of tabellae [see MINATO & ROWETT, 1967a, p. 333]




References



Museum or Author Information

Yü, 1934