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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
(Click to enlarge in a new window)
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
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
(Click to enlarge in a new window)
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