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Echinocyamus
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:
Echinocyamus van PHELSUM, 1774, p. 131
Type Species:
*Echinocyamus pusillus Müller, 1776, p. 236 (=Spatagus pusillus Müller, 1776, p. 236), SD ICZN, 1950
Images
(Click to enlarge in a new window)
Fig. 360,5. *E. pusillus (Müller), Rec., Eu., 5a-c, aboral, oral, oral int., ×4 (135)
Synonyms
Eclzinocentrotw
Geographic Distribution
worldwide as fossil, living Eu.-IndoPac.
Age Range
Beginning Stage in Treatise Usage:
U. Cret.(Senon.)
Beginning International Stage:
Coniacian
Fraction Up In Beginning Stage:
0
Beginning Date:
89.39
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test moderately flattened, hydropores few, not in groove, periproct between 1st and 2nd pair of coronal plates, petals poorly defined in some forms, pore pairs usually oblique, no spicules in tube feet, 5 pairs of internal radiating partitions, in some species females with aboral marsupium
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:
Echinocyamus van PHELSUM, 1774, p. 131
Type Species:
*Echinocyamus pusillus Müller, 1776, p. 236 (=Spatagus pusillus Müller, 1776, p. 236), SD ICZN, 1950
Images
(Click to enlarge in a new window)
Fig. 360,5. *E. pusillus (Müller), Rec., Eu., 5a-c, aboral, oral, oral int., ×4 (135)
Synonyms
Eclzinocentrotw
Geographic Distribution
worldwide as fossil, living Eu.-IndoPac.
Age Range
Beginning Stage in Treatise Usage:
U. Cret.(Senon.)
Beginning International Stage:
Coniacian
Fraction Up In Beginning Stage:
0
Beginning Date:
89.39
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test moderately flattened, hydropores few, not in groove, periproct between 1st and 2nd pair of coronal plates, petals poorly defined in some forms, pore pairs usually oblique, no spicules in tube feet, 5 pairs of internal radiating partitions, in some species females with aboral marsupium