Welcome to the Echinoderm subsite on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Discoides
Classification
Phylum:
Echinodermata
Subphylum:
Echinozoa (sea urchins, holothurians, etc.)
Class:
Echinoidea
Subclass:
Euechinoidea (sea urchins) - Superorder Neognathostomata (sand dollars)
Order:
Holectypoida
Suborder:
Holectypina
Family:
Discoididae
Formal Genus Name and Reference:
Discoides PARKINSON, 1811, p. 20
Type Species:
*Echinites subuculus LESKE, 1778, p. 171, OD
Images
(Click to enlarge in a new window)
Fig. 330,3. *D. subucula (Leske), Cenoman., Eng. (3a, b, f), Fr. (3 c-e), 3a, b, aboral, oral, X1(173), 3c, d, int. mold, aboral and oral views, X1 (27a), 3e, apical system, enlarged (27a), 3f, amb. plates, enlarged (81)
Synonyms
Discodea, Discoidea, Protocyamus
Geographic Distribution
Eu.-N. Am.
Age Range
Beginning Stage in Treatise Usage:
Cret.(Apt.)
Beginning International Stage:
Aptian
Fraction Up In Beginning Stage:
0
Beginning Date:
121.4
Ending Stage in Treatise Usage:
Cret.(Turon.)
Ending International Stage:
Turonian
Fraction Up In Ending Stage:
100
Ending Date:
89.39
Description
Aboral side conical to subconical, ambulacra with reduced plates from peristome to ambitus, genital plate 5 imperforate, madreporite may extend to all genital plates
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:
Holectypoida
Suborder:
Holectypina
Family:
Discoididae
Formal Genus Name and Reference:
Discoides PARKINSON, 1811, p. 20
Type Species:
*Echinites subuculus LESKE, 1778, p. 171, OD
Images
(Click to enlarge in a new window)
Fig. 330,3. *D. subucula (Leske), Cenoman., Eng. (3a, b, f), Fr. (3 c-e), 3a, b, aboral, oral, X1(173), 3c, d, int. mold, aboral and oral views, X1 (27a), 3e, apical system, enlarged (27a), 3f, amb. plates, enlarged (81)
Synonyms
Discodea, Discoidea, Protocyamus
Geographic Distribution
Eu.-N. Am.
Age Range
Beginning Stage in Treatise Usage:
Cret.(Apt.)
Beginning International Stage:
Aptian
Fraction Up In Beginning Stage:
0
Beginning Date:
121.4
Ending Stage in Treatise Usage:
Cret.(Turon.)
Ending International Stage:
Turonian
Fraction Up In Ending Stage:
100
Ending Date:
89.39
Description
Aboral side conical to subconical, ambulacra with reduced plates from peristome to ambitus, genital plate 5 imperforate, madreporite may extend to all genital plates