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Ehmaniella

Classification

    Phylum:  
Unknown
    Class:  
Trilobata
    Order:  
Ptychopariida
    Superfamily:  
Ptychopariacea
    Family:  
Alokistocaridae
    Formal Genus Name and Reference:  
Ehmaniella RESSER, 1937
    Type Species:  
Crepicephalus? (Loganella) quadrans Hall & WHITFIELD, 1877


Images

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Fossil Image
Fig. 177, 7. *E. quadrans (Hall & Whitfield), Ophir F., Utah; 7a-c, ceph., librigena, pyg.. enlarged (488ยท)


Synonyms



Geographic Distribution

W.USA


Age Range

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


Description

Like Ehmania but with wider cranidium, heavier eye ridges, longitudinal striae on wider preglabellar area, commonly with tubercles on cranidium, and fewer segments in pygidium




References



Museum or Author Information