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Haplolasma

Classification

    Phylum:  
Cnidaria
    Class:  
Anthozoa
    Subclass:  
Rugosa
    Order:  
Stauriida
    Suborder:  
Aulophyllina
    Family:  
Aulophyllidae
    Subfamily:  
Dibunophyllinae
    Formal Genus Name and Reference:  
Haplolasma SEMENOFF-TIAN-CHANSKY, 1974, p. 196
    Type Species:  
Caninia subibicina MCCOV, 1851a, p. 167, OD, †A2358, SM, Cambridge


Images

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Fossil Image
Fig. 239,3a,b. *H. subibicinum (McCoy), holotype, low. Visean, Eng., Kendal, Westmoreland, a, b, transv. secs., X2.7, X1.3, c, long. sec., X1.3 (Semenoff-TianChansky, 1974).


Synonyms

Haplophyllia


Geographic Distribution

Eu.(Brit.I.-Moscow Basin-Donbas-?Urals-?N.Zemlya)-N.Afr.(Alg.)-?Asia(Hunan), U.Miss., ?N.Am.(Nev.-Utah)


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Solitary, moderately large, septa numerous, thin, radial, major septa subequally withdrawn from axis, minor septa complete, tabulae flat with downturned edges, fossula wide, shallow, invading dissepimentarium, with shortened cardinal septum, counter septum may be long, dissepimentarium narrow, normal concentric, dissepiments fine, steeply inclined and subglobose. [Possibly cyathopsid.]




References

Semenoff-Tian-Chansky, Pierre, 1974, Recherches sur les Tétracoralliares du Carbonifère du Sahara occidental: Centre des recherches sur les zones arides, sér. Géol., Mém. 21, p. 1-316, text-fig. 1-100, pl. 1-76, tables 1-4. [Coedition with Mus. natl. Hist. Nat., Mém., sér. C (Sciences de la Terre), v. 30.] —, Lafuste, Jean, \& Durand-Delga, Michel, 1962, Madréporaires du Dévonien du Chénoua (Algérie): Soc. Géol. France, Bull., sér. 7, v. 3, p. 290-319, text-fig. 1, 2, text-pl. 1-111, pl. 9.


Museum or Author Information

Semenoff-TianChansky, 1974