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Oryctocephalites
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Corynexochida
Superfamily:
Unknown
Family:
Oryctocephalidae
Formal Genus Name and Reference:
Oryctocephalites RESSER, 1939
Type Species:
O. typicalis
Images
(Click to enlarge in a new window)
Fig. 162, 3. *O. typicalis, Idaho, 3 a, b, cran., pyg., x2 (448n)
Synonyms
Geographic Distribution
N.Am.
Age Range
Beginning Stage in Treatise Usage:
M.Cam.
Beginning International Stage:
Cambrian Stage 4
Fraction Up In Beginning Stage:
0
Beginning Date:
512.3
Ending Stage in Treatise Usage:
M.Cam.
Ending International Stage:
Guzhangian
Fraction Up In Ending Stage:
0
Ending Date:
498.75
Description
Similar to Oryctocephalus but anterior outline of cranidium less straight and glabella more definitely expanded forward. Pygidium with obsolete interpleural grooves and 5 pairs of marginal spines.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Corynexochida
Superfamily:
Unknown
Family:
Oryctocephalidae
Formal Genus Name and Reference:
Oryctocephalites RESSER, 1939
Type Species:
O. typicalis
Images
(Click to enlarge in a new window)
Fig. 162, 3. *O. typicalis, Idaho, 3 a, b, cran., pyg., x2 (448n)
Synonyms
Geographic Distribution
N.Am.
Age Range
Beginning Stage in Treatise Usage:
M.Cam.
Beginning International Stage:
Cambrian Stage 4
Fraction Up In Beginning Stage:
0
Beginning Date:
512.3
Ending Stage in Treatise Usage:
M.Cam.
Ending International Stage:
Guzhangian
Fraction Up In Ending Stage:
0
Ending Date:
498.75
Description
Similar to Oryctocephalus but anterior outline of cranidium less straight and glabella more definitely expanded forward. Pygidium with obsolete interpleural grooves and 5 pairs of marginal spines.