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Clypeus
Classification
Phylum:
Echinodermata
Subphylum:
Echinozoa (sea urchins, holothurians, etc.)
Class:
Echinoidea
Subclass:
Euechinoidea (sand dollars) - Superorder Atelostomata
Order:
Cassiduloida
Family:
Clypeidae
Formal Genus Name and Reference:
Clypeus LESKE, 1778, p. 93
Type Species:
*C. plotii, SD, KIER, 1958, p. 30
Images
(Click to enlarge in a new window)
Fig. 386,4. *C. plotii, M.Jur. (Inferior Oolite), G. Brit. aboral, X0.5 (98). -- Fig. 385,1. C. sinuatus Leske, M.Jur.(Gr. Oolite), Fr., amb. I phyllode, X4 (98)
Synonyms
Echinoclypeus, Auloclypeus, Crotoclypeus, Dactyloclypeus
Geographic Distribution
Eu.-Afr.
Age Range
Beginning Stage in Treatise Usage:
M. Jur.(Bajoc.)
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
0
Beginning Date:
170.9
Ending Stage in Treatise Usage:
U.Jur.(Kimmeridg.)
Ending International Stage:
Kimmeridgian
Fraction Up In Ending Stage:
100
Ending Date:
149.24
Description
Broad, petals long, broad, periproct supramarginal, bourrelets well developed, phyllodes with many pore pairs
References
Museum or Author Information
Classification
Phylum:
Echinodermata
Subphylum:
Echinozoa (sea urchins, holothurians, etc.)
Class:
Echinoidea
Subclass:
Euechinoidea (sand dollars) - Superorder Atelostomata
Order:
Cassiduloida
Family:
Clypeidae
Formal Genus Name and Reference:
Clypeus LESKE, 1778, p. 93
Type Species:
*C. plotii, SD, KIER, 1958, p. 30
Images
(Click to enlarge in a new window)
Fig. 386,4. *C. plotii, M.Jur. (Inferior Oolite), G. Brit. aboral, X0.5 (98). -- Fig. 385,1. C. sinuatus Leske, M.Jur.(Gr. Oolite), Fr., amb. I phyllode, X4 (98)
Synonyms
Echinoclypeus, Auloclypeus, Crotoclypeus, Dactyloclypeus
Geographic Distribution
Eu.-Afr.
Age Range
Beginning Stage in Treatise Usage:
M. Jur.(Bajoc.)
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
0
Beginning Date:
170.9
Ending Stage in Treatise Usage:
U.Jur.(Kimmeridg.)
Ending International Stage:
Kimmeridgian
Fraction Up In Ending Stage:
100
Ending Date:
149.24
Description
Broad, petals long, broad, periproct supramarginal, bourrelets well developed, phyllodes with many pore pairs