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Dictyonema

Classification

    Phylum:  
Hemichordata
    Class:  
Pterobranchia
    Order:  
Dendroidea
    Superfamily:  
Unknown
    Family:  
Callograptidae
    Formal Genus Name and Reference:  
Dictyonema HALL, 1851, p. 401
    Type Species:  
*Gorgonia? retiformis Hall, 1843, p. 115, SD MILLER, 1889, p. 185


Images

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Fossil ImageFossil Image
Fig. 151,4a-b. * D. retiformis (Hall), 4a, holotype, AMNH 1671, scale bar, 10 mm (Hall, 1865, fig. 10), 46, NYSM 7112, detail of stipe fragment showing complex thecal overlap and bridge development, scale bar, 1 mm (Ruedemann, 1908, fig. 64).-Fig. 151,4c. D. graptolithorum PоС̌тA, 1894, fragment with complex stipes, scale bar, 1 mm (Bouček, 1957, fig. 27b).


Synonyms

Dictyograptus


Geographic Distribution

worldwide


Age Range

    Beginning Stage in Treatise Usage:  
Cambrian (Miaolingian)
    Beginning International Stage:  
Wuliuan
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
509
    Ending Stage in Treatise Usage:  
Carboniferous
    Ending International Stage:  
Gzhelian
    Fraction Up In Ending Stage:  
0
    Ending Date:  
298.89


Description

Tubarium conical to fan-shaped, conical tubaria varying from almost cylindrical to almost discoidal, stipes straight, subparallel to parallel, branching dichotomously, stipes united by regularly or irregularly produced thecal bridges formed from single or multiple thecal tubes, stipes compound, formed from complexly overlapping slender, tubular thecae, thecal apertures isolate, openings oriented ventrally, sicular and proximal development unknown




References

Hall, James. 1851. New genera of fossil corals from the report by James Hall, on the palaeontology of New York. The American Journal of Science and Arts (series 2) 11:398-401.


Museum or Author Information

AMNH, NYSM, Hall, 1865, Ruedemann, 1908, Bouček, 1957