Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Lituonella
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Lituolacea
Family:
Pavonitinidae
Subfamily:
Pavonitininae
Formal Genus Name and Reference:
Lituonella Schlumberger in Schlumberger & DouvillÉ, 1905, *1667, p. 297, 303
Type Species:
L. roberti, OD
Images
(Click to enlarge in a new window)
Fig. 206,1,2. *L. roberti, M.Eoc. (Lutet.), Fr., 1 a-c, side, spiral, and apert. views of topotype showing asymmetrical spire and large perforations of terminal face, X17 (*2117), 2, axial sec., X15 (*1780). --Fig. 206,3. L. douvillei Davies, L.Eoc., Baluch., 3a, horiz. sec. showing undivided outer marginal zone and interseptal buttresses in central area, X18, 3 b, marginal portion, X48 (*560).
Synonyms
Geographic Distribution
Eu.(Fr.)-Asia (India)
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
Test conical, early chambers in asymmetrical spire somewhat to one side of apex of test, later chambers broad, saucer-shaped, nearly circular in plan, with marginal ridge, sutures curved in early portion, nearly straight in uniserial portion and slightly depressed, outer wall compact, imperforate, central portion of basal surface with spongy texture and containing large perforations, each of which is bordered by hemicylindrical, pillar-like interseptal buttresses, those of outer ring of perforations with buttress external to opening, marginal area outside rows of perforations without subdivision. [The depository for types of Lituonella roberti was not stated originally; the lectotype and paratypes are in the Sorbonne collections, Paris.]
References
Schlumberger, Charles, , \& Douvillé, Henri, 1905, Sur deux Foraminifères Eocènes, Dictyoconus egyptiensis Chapm. et Lituonella roberti, nov.gen. et sp.: Soc. géol. France, Bull., ser. 4, v. 5, no. 3, p. 291-304, pl. 9.
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Lituolacea
Family:
Pavonitinidae
Subfamily:
Pavonitininae
Formal Genus Name and Reference:
Lituonella Schlumberger in Schlumberger & DouvillÉ, 1905, *1667, p. 297, 303
Type Species:
L. roberti, OD
Images
(Click to enlarge in a new window)
Fig. 206,1,2. *L. roberti, M.Eoc. (Lutet.), Fr., 1 a-c, side, spiral, and apert. views of topotype showing asymmetrical spire and large perforations of terminal face, X17 (*2117), 2, axial sec., X15 (*1780). --Fig. 206,3. L. douvillei Davies, L.Eoc., Baluch., 3a, horiz. sec. showing undivided outer marginal zone and interseptal buttresses in central area, X18, 3 b, marginal portion, X48 (*560).
Synonyms
Geographic Distribution
Eu.(Fr.)-Asia (India)
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
Test conical, early chambers in asymmetrical spire somewhat to one side of apex of test, later chambers broad, saucer-shaped, nearly circular in plan, with marginal ridge, sutures curved in early portion, nearly straight in uniserial portion and slightly depressed, outer wall compact, imperforate, central portion of basal surface with spongy texture and containing large perforations, each of which is bordered by hemicylindrical, pillar-like interseptal buttresses, those of outer ring of perforations with buttress external to opening, marginal area outside rows of perforations without subdivision. [The depository for types of Lituonella roberti was not stated originally; the lectotype and paratypes are in the Sorbonne collections, Paris.]
References
Schlumberger, Charles, , \& Douvillé, Henri, 1905, Sur deux Foraminifères Eocènes, Dictyoconus egyptiensis Chapm. et Lituonella roberti, nov.gen. et sp.: Soc. géol. France, Bull., ser. 4, v. 5, no. 3, p. 291-304, pl. 9.