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Grypophyllum

Classification

    Phylum:  
Cnidaria
    Class:  
Anthozoa
    Subclass:  
Rugosa
    Order:  
Stauriida
    Suborder:  
Ptenophyllina
    Family:  
Ptenophyllidae
    Subfamily:  
Ptenophyllinae
    Formal Genus Name and Reference:  
Grypophyllum WEDEKIND, 1922a, p. 13
    Type Species:  
G. denckmanni, OD, †3949, Wedekind Coll., SM, Frankfurt


Images

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Fig. 146,2a,b. *G. denckmallni, ho!otype, Givet., Ger., Hand; a,b, transv., long. sees., X2.0, X1.3 (a, Pedder, 1973; b, Wedekind, 1922a). --Fig. 146,2c,d. G. normale WEDEKIND, holotype, Givet., Ger., Hand; c,d, transv., long. sees., X 1.3 (Wedekind, 1925).


Synonyms

Hooeiphyllum, Grypophyllum normale, ?Neogrypophyllum


Geographic Distribution

Eu. (Ger.-U.K.-Belg.-France-Czech.-Aus.-Urals-N. Zemlya)-Asia (Kuzbas-NE. USSR-Pak.-Kwangsi) -N.Am.(S.Mackenzie); base U.Dev., N. Am. (S.Mackenzie-Alberta)


Age Range

    Beginning Stage in Treatise Usage:  
M.Dev.
    Beginning International Stage:  
Eifelian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
394.3
    Ending Stage in Treatise Usage:  
M.Dev.
    Ending International Stage:  
Givetian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
378.9


Description

Solitary, commonly subcylindrical, septa numerous, finely and closely trabeculate, noncarinate, commonly thin, major septa reach axis, may interdigitate or coil slightly in tabularium, dissepimentarium wide and tabularium narrow, minor septa commonly well-developed but very thin to failing in type species; Km more or less significantly lengthened; lonsdaleoid dissepiments commonly sparse; tabular floors close together, flat, with median (or axial) depression [BIRENHElDE, 1972, p. 407; PEDDER, 1973, p. 99].




References

Wedekind, Rudolf, 1922a, Zur Kenntnis der Stringophyllen des oberen Mitteldevon: Ges. Beförd Gesamten Naturwiss. Marburg, Sitzungsber. REFERENCES, , pt. 1, p. 1-16, text-fig. 1-18.


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