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Kiwetinokia

Classification

    Phylum:  
Porifera
    Class:  
Hexactinellida
    Subclass:  
Amphidiscophora
    Order:  
Reticulosa
    Superfamily:  
Protospongioidea
    Family:  
Protospongiidae
    Formal Genus Name and Reference:  
Kiwetinokia WALCOTT, 1920, p. 311
    Type Species:  
K. utahensis WALCOTT, 1920, p. 313, OD


Images

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Fossil Image
Fig. 224, 1a-b. *K. utahensis, Marjum Limestone, House Range, Utah; a, photomicrograph of strew of stauractines in lectotype; b, rod formed of twisted diactine in lectotype fragment, USNM 66542, X2 (Walcott, 1920).


Synonyms



Geographic Distribution

USA (Utah), Canada (Quebec), Argentina


Age Range

    Beginning Stage in Treatise Usage:  
Middle Cambrian
    Beginning International Stage:  
Cambrian Stage 4
    Fraction Up In Beginning Stage:  
40
    Beginning Date:  
512.3
    Ending Stage in Treatise Usage:  
Middle Cambrian
    Ending International Stage:  
Guzhangian
    Fraction Up In Ending Stage:  
50
    Ending Date:  
498.75


Description

The type species consists of scattered stauractines, tauactines, and two possible rhabdodiactines twisted together spirally. [K. spiralis W ALCOTT and K. metissica (D AWSON , 1889) consist of similar spicules with cablelike rods apparently of a half-dozen or so rhabdodiactines twisted together. H INDE (1893a) considered the cablelike spicules called Hyalostelia metissica by DAWSON (1889) to be possibly the root tufts of co-occurring Palaeosaccus, an opinion subsequently concurred with by D AWSON (1896, p. 108). Kiwetinokia could be considered a junior subjective synonym of Palaeosaccus.]




References

Walcott, C. D. 1920. Cambrian Geology and Paleontology. IV. no. 6. Middle Cambrian Spongiae. Smithsonian Miscellaneous Collections 67(6):261-364, fig. 4-10, pl. 60-90.


Museum or Author Information

USNM, Walcott, 1920