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Cyamidia
Classification
Phylum:
Echinodermata
Subphylum:
Echinozoa (sea urchins, holothurians, etc.)
Class:
Echinoidea
Subclass:
Euechinoidea (sea urchins) - Superorder Neognathostomata (sand dollars)
Order:
Clypeasteroida (sand dollars)
Suborder:
Laganina
Family:
Fibulariidae
Formal Genus Name and Reference:
Cyamidia Lambert & THIÉRY, 1914, p. 288
Type Species:
*Echinocyamus nummulitica Duncan & SLADEN, 1884, p. 132, OD
Images
(Click to enlarge in a new window)
Fig. 360,2. *C. nummulitica (Duncan & Sladen), Pak., 2a, b, aboral, oral, X3, 2c, apical region, enlarged (47)
Synonyms
Geographic Distribution
India, Pakistan, Australia
Age Range
Beginning Stage in Treatise Usage:
Eoc.
Beginning International Stage:
Ypresian
Fraction Up In Beginning Stage:
0
Beginning Date:
56
Ending Stage in Treatise Usage:
Eoc.
Ending International Stage:
Priabonian
Fraction Up In Ending Stage:
100
Ending Date:
33.9
Description
Small, variably inflated, petals well defined, inner member of pore pair smaller than outer, periproct radially elongate, midway on oral surface, single hydropore
References
Museum or Author Information
Classification
Phylum:
Echinodermata
Subphylum:
Echinozoa (sea urchins, holothurians, etc.)
Class:
Echinoidea
Subclass:
Euechinoidea (sea urchins) - Superorder Neognathostomata (sand dollars)
Order:
Clypeasteroida (sand dollars)
Suborder:
Laganina
Family:
Fibulariidae
Formal Genus Name and Reference:
Cyamidia Lambert & THIÉRY, 1914, p. 288
Type Species:
*Echinocyamus nummulitica Duncan & SLADEN, 1884, p. 132, OD
Images
(Click to enlarge in a new window)
Fig. 360,2. *C. nummulitica (Duncan & Sladen), Pak., 2a, b, aboral, oral, X3, 2c, apical region, enlarged (47)
Synonyms
Geographic Distribution
India, Pakistan, Australia
Age Range
Beginning Stage in Treatise Usage:
Eoc.
Beginning International Stage:
Ypresian
Fraction Up In Beginning Stage:
0
Beginning Date:
56
Ending Stage in Treatise Usage:
Eoc.
Ending International Stage:
Priabonian
Fraction Up In Ending Stage:
100
Ending Date:
33.9
Description
Small, variably inflated, petals well defined, inner member of pore pair smaller than outer, periproct radially elongate, midway on oral surface, single hydropore