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Elrathia
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Ptychopariacea
Family:
Alokistocaridae
Formal Genus Name and Reference:
Elrathia WALCOTT, 1924
Type Species:
Conocoryphe (Conocephalites) kingii MEEK, 1870
Images
(Click to enlarge in a new window)
Fig. 179, 1. *E. kingii (Меfk), Wheeler F., Utah, x1 (320).
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 Ehmaniella, but pygidium larger, with segmentation less well developed. M.Cam., W.USA.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Ptychopariacea
Family:
Alokistocaridae
Formal Genus Name and Reference:
Elrathia WALCOTT, 1924
Type Species:
Conocoryphe (Conocephalites) kingii MEEK, 1870
Images
(Click to enlarge in a new window)
Fig. 179, 1. *E. kingii (Меfk), Wheeler F., Utah, x1 (320).
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 Ehmaniella, but pygidium larger, with segmentation less well developed. M.Cam., W.USA.