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Goniocladia

Classification

    Phylum:  
Bryozoa
    Subphylum:  
Ectoprocta
    Class:  
Gymnolaemata
    Order:  
Cystoporata
    Suborder:  
Fistuliporina
    Family:  
Goniocladiidae
    Formal Genus Name and Reference:  
Goniocladia ETHERIDGE, 1876, p. 522, nom. subst. pro Carinella ETHERIDGE, 1873, p, 433, non JOHNSTON, 1833, p. 232
    Type Species:  
*Carinella cellulifera ETHERIDGE, 1873, p. 433, OD, "Low. Ls. Gr., " L. Carb., Braidwood, Eng.


Images

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Fossil Image
Fig. 213, 1a-b. *G. cellulifera (Etheridge), a, branching zoarium, elevated lunaria, topotype, BMNH D32637, x9, b, vertical mesotheca, vesicles and stereom in exozone, stereom on reverse side (below), transv. sec., topotype, BMNH D 32637-3, x50, c, laminated walls and lunaria with tubules on outer side (right), stereom with numerous acanthostyles, tang. sec., topotype, BMNH D32637-2, x100, d, solid reverse side (left), autozooecia and vesicles in endozone, oblique long. sec., topotype, BMNH D326377, x50, e, mesotheca, autozooecia curve distolaterally, vesicles in outer endozone, stereom in exozone, tang. sec., topotype, BMNH D326375, x30, f, mesotheca (left), autozooecia isolated by stereom and vesicles, lunaria on outer (right) side, tang. sec., topotype, BMNH D32637-4, x50, g, subcircular autozooecia, tang. sec., topotype, BMNH D32637-7, x30, b, wall microstructure, vesicles and stereom, long. sec., topotype, BMNH D32637-7, x100."


Synonyms



Geographic Distribution

Miss.-Perm., Eu., Asia, Australia


Age Range

    Beginning Stage in Treatise Usage:  
Miss.
    Beginning International Stage:  
Tournaisian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
359.3
    Ending Stage in Treatise Usage:  
Perm.
    Ending International Stage:  
Changhsingian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
251.9


Description

Zoarium bifoliate, narrow, curved dichotomous branches in some anastomosing to form large fenestrules, vertical mesotheca protruding as ridge on rounded, noncelluliferous reverse side and as sharp keel on peaked obverse side, Autozooecia in two to three rows on either side of median carina, subcircular apertures opening upward and indented by ends of lunaria on side of autozooecia away from branch center, Mesotheca thin, median layer dark, outer layers laminated, Autozooecia hemispherical in cross section at mesotheca, partially isolated by small vesicles, curving upward and outward, diaphragms sparse, Walls with thin, dark, serrated boundary and laminated cortex having minute tubules perpendicular to boundary, Lunaria laminated, with numerous tubules in proximal side, Vesicles forming small blisters, laminated, stereom laminated, with numerous tubules and small, indistinct acanthostyles in most of exozone and noncelluliferous reverse side.




References

Etheridge, Robert, Jr., ,, 1876, Carboniferous and post-Tertiary Polyzoa: Geol. Mag., n.ser., dec. 2, v. 3, p. 522523, 1 text-fig.


Museum or Author Information