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Dibunophyllum

Classification

    Phylum:  
Cnidaria
    Class:  
Anthozoa
    Subclass:  
Rugosa
    Order:  
Stauriida
    Suborder:  
Aulophyllina
    Family:  
Aulophyllidae
    Subfamily:  
Dibunophyllinae
    Formal Genus Name and Reference:  
Dibunophyllum Thomson & NICHOLSON, 1876a, p. 457
    Type Species:  
D. Muirheadi; SD GREGORY, 1917, p. 222; tTI032, KM, Glasgow, lectotype by HILL, 1938-1941, p. 72; =Clisiophyllum bipartitum McCoy, 1849, p. 2, tA1971, SM, Cambridge, lectotype by HILL, 1938, p. 67, Derbyshire


Images

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Fig. 237, 1a-h. *D. bipartitum (McCoY); a, lectotype of D. muirheadi THOMSON, Visean, Ayrshire, Gateside near Beith, transv. sec., X1.0 (Hill, 1938-1941); b, lectotype of D. bipartitum (McCoY), Visean, Derbyshire, long. sec., X 1.0 (Hill, 1938-1941); c,d, lectotype of Aspidiophyllum koninckianum THOMSON, transv., long. sees., X 1.0 (Thomson, 1883); e,j, lectotype of Kumatiophyllum concentriettm THOMSON, long., transv. sees., X 1.0 (Thomson, 1877); g,h, lectotype of Rodophyllum craigiamtm THOMWN, transv., long. sees., X 1.0 (Thomson & Nicholson, 1876b).--FIG. 237,1i,j. D. sinense (Wu), holotype; i,j, transv., long. secs., X1.5 (Wu, 1964).


Synonyms

Clisiophylloides, Clisiophyllum, Aspidiophyllum, Kurnatiophyllum, Kumatiophyllum, Aspidophyllum, Cymatiophyllum, Albertia, Histiophyllum, Centrephyllum, Centrolamellum, ?Protodibtmophyllum, Hunanoclisia, Protiodibunophyllum, ?Biphyllum, ?Katranophyllum, Proalbertia, Dibunophyllum


Geographic Distribution

Eu. (Brit. I.-Belg.-France-Ger.-Czech.-Pol.-USSR)-Asia (Taymyr-China-Sinkiang-Japan); N. Afr. (Alg.-Moroc.)-N. Am. (N. Scotia-Texas- Ore.); ?Penn., N.Am.(Kans.-Okla)


Age Range

    Beginning Stage in Treatise Usage:  
L. Carb.
    Beginning International Stage:  
Tournaisian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
359.3
    Ending Stage in Treatise Usage:  
U. Carb.(Namur.)
    Ending International Stage:  
Bashkirian
    Fraction Up In Ending Stage:  
48.4
    Ending Date:  
319.4


Description

Large, solitary, with variable axial structure typically one-third as wide as corallum and consisting of long medial plate, a few (commonly four to eight) septal lamellae on either side, and numerous axial tabellae declined steeply at its periphery, less commonly lamellae may be convolute, median plate shortens toward fossula or disappears, and biradial arrangement is lost, minor septa discontinuous so that dissepiments of wide dissepimentarium inosculate, cardinal septum shortens in open, commonly parallel-sided fossula that indents dissepimentarium, periaxial tabellae less steeply declined outward than axial tabellae, in early stages cardinal and counter septa and median plate continuous. [HILL, 1938-1941, p. 65].




References



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