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Circophyllum

Classification

    Phylum:  
Cnidaria
    Class:  
Anthozoa
    Subclass:  
Rugosa
    Order:  
Stauriida
    Suborder:  
Streptelasmatina
    Family:  
Kodonophyllidae
    Formal Genus Name and Reference:  
Circophyllum Lang & SMITH, 1939, p. 153, nom. subst. pro Rhysodes SMITH & TREMBERTH, 1927, p. 311, non Rhysodes ILLIGER in KALMAN, 1823, a coleopteron
    Type Species:  
Rhysodes samsugnensis Smith & TREMBERTH, 1927, p. 311, OD, †R24355, BM (NH), London


Images

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Fossil Image
Fig. 99,3a,b. *C. samsugnense (Smith & Tremberth), U.Sil., Slite Gr., Swed., Fårö, Gotl., a, b, long., transv. secs., X5 (Hill, n, UQF34671).


Synonyms

Rhyzodes


Geographic Distribution

Eu.(Gotl.)-?Asia(Altay-Kazakh.), ?Sil., N.Am.(Utah), ?L. Dev., Asia(Tadzhik.-E.Urals)


Age Range

    Beginning Stage in Treatise Usage:  
U.Sil.(Ludlov.)
    Beginning International Stage:  
Gorstian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
426.74
    Ending Stage in Treatise Usage:  
U.Sil.(Ludlov.)
    Ending International Stage:  
Ludfordian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
422.73


Description

Fasciculate, increase peripheral, parricidal, corallites slender with narrow peripheral septal stereozone, major septa long, straight, united axially in variable groups, axial ends somewhat thickened and may be deflected, tabular floors conical with upturned edges, dissepiments absent




References



Museum or Author Information