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Scutellina
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:
Scutellina L. AGASSIZ, 1841, p. 98
Type Species:
*S. nummularia (=Scutella nummularia Defrance, 1827, p. 231, =S. lenticularis LAMARCK, 1816, p. 10, OD)
Images
(Click to enlarge in a new window)
Fig. 361,4. *S. lenti- cularis (LAMARCK), Fr.; 4a,b, aboral, plates of oral surface (interamb. stippled), X3 (27, 51
Synonyms
Geographic Distribution
Eu.-N.Afr.
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, flattened, outline circular, margin thin; petals well defined, anterior petal open, posterior petals tending to close; periproct marginal; interambulacra about 0.25 width of ambulacra at ambi- tus.
References
Agassiz, Louis, 1841, Monographies d'échinodermes vivants et fossiles. Sec. mon., Des Scutelles: 151 p., 27 pl., Petitpierre (Neuchâtel).
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:
Scutellina L. AGASSIZ, 1841, p. 98
Type Species:
*S. nummularia (=Scutella nummularia Defrance, 1827, p. 231, =S. lenticularis LAMARCK, 1816, p. 10, OD)
Images
(Click to enlarge in a new window)
Fig. 361,4. *S. lenti- cularis (LAMARCK), Fr.; 4a,b, aboral, plates of oral surface (interamb. stippled), X3 (27, 51
Synonyms
Geographic Distribution
Eu.-N.Afr.
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, flattened, outline circular, margin thin; petals well defined, anterior petal open, posterior petals tending to close; periproct marginal; interambulacra about 0.25 width of ambulacra at ambi- tus.
References
Agassiz, Louis, 1841, Monographies d'échinodermes vivants et fossiles. Sec. mon., Des Scutelles: 151 p., 27 pl., Petitpierre (Neuchâtel).